7MYP Test 4

​MYP Test Review

By LMS Math 7

Multiple Choice

The Ramirez family’s annual income is $156,840. The family decides to start a college fund for their children. Beginning next month, they will set aside 30% of their total annual income for the fund. How much money will the Ramirez family save each year?

• $31,368

• $47,052

• $52,280

• $62,450

Percent Change Example

According to census data, Franklin County had a population of 325,400 in the year 2010. By 2020, the population had increased by 162,700 people.

Which answer choice best represents the percent change in Franklin County’s population from 2010 to 2020? If multiple choice a good test taking strategy is to multiply by the answer choices converted to a decimal to save from some division.

Multiple Choice

In 2010, Henderson County had a population of 214,800. By 2020, the population had increased by 64,440 people.

Which answer choice best represents the percent change in Henderson County’s population from 2010 to 2020?(Hint Test each answer choice)

• 15%

• 25%

• 30%

• 35%

Percent Change Example v2

Carlos weighed 180 pounds before starting his fitness program. After three months, he now weighs 153 pounds.
By what percentage did Carlos’s weight decrease?

Multiple Choice

Before changing her eating habits, Ava weighed 160 pounds. After six months of healthy eating, her weight dropped to 136 pounds.

What is the percent decrease in Ava’s weight?

• 12%

• 15%

• 20%

• 25%

Multi-Step Percent Example

Sophia bought a new refrigerator that regularly costs $1,080. The store was offering a 10% discount, and a 8% sales tax was applied to the discounted price.

How much did Sophia pay for the refrigerator?

Multiple Choice

Liam bought a mountain bike that regularly costs $895.00. He received a 15% discount, and a 7% sales tax was applied to the discounted price.

How much did Liam pay for the bike?

• $814.15

• $830.82

• $851.04

• $860.50

​Olivia earns a 5% commission on every house she sells. She recently sold three houses listed below.
House Selling Price ($)
A 220,000
B 185,000
C 195,000
What is Olivia’s total commission for the sale of these three houses?

Multiple Choice

Marcus earns a 7% commission on every motorcycle he sells. The table below shows his recent sales.

Motorcycle Selling Price ($)

X - 9,800

Y - 7,600

Z - 12,400

What is Marcus’s total commission for these sales?

• $2,020

• $2,150

• $2,100

• $2,050

Calculating Sales Tax:​
Ella buys a pair of designer shoes for $120. The store charges a 7.5% sales tax. What is the total cost of the shoes?

Multiple Choice

Noah buys a video game console priced at $350. The sales tax rate is 6%.

What is the total cost of the console?

• $361.00

• $370.00

• $371.00

• $371.50

Multiple Choice

Ethan is buying a backpack for $55 and a water bottle for $12.75. If the sales tax rate is 7%, what is the amount of sales tax (in dollars and cents) that Ethan will pay?

• $4.74

• $5.04

• $5.87

• $6.00

Slope Intercept Form

The number before the x is the rate of change (slope).

The number after the x is the

y-intercept. which often represents the start or initial value.

y-intercept - b

The y value when x is 0. Often the start or initial value in a problem.

Graph from Verbal​
Maria started with $40 on a gift card. Each time she buys a smoothie, she spends $4.50. Let x represent the number of smoothies she buys, and y represent the amount of money left on the gift card. Which graph represents this situation?

Start with the initial value: Maria begins with $40 → y-intercept = 40.
Each smoothie costs $4.50: This means she loses $4.50 each time → slope = –4.5.
Equation: y = 40−4.5x
Interpret the graph: The line starts at (0, 40) and decreases as the number of smoothies increases.

Multiple Choice

James begins with $60 in his lunch account. Each school lunch costs $3.75.

Let x be the number of lunches he buys and y be the amount of money left.

Which graph represents this situation?

​Examine the table

Which equation represents the relationship in the table?

Multiple Choice

• $$y=3x-3$$

• $$y=-3x+3$$

• $$y=\frac{1}{3}x-3$$

• $$y=3x+3$$

Multiple Choice

• $$y=-\frac{1}{2}x+12$$

• $$y=\frac{1}{2}x+12$$

• $$y=-x+12$$

• $$y=-\frac{1}{3}x+11$$

​A local café delivers cups of coffee for online orders.
The café charges a $6 delivery fee.
The total cost to deliver 3 coffees is $15.
The total cost to deliver 8 coffees is $30.

Which equation represents the total cost, 𝑦, for a delivery of 𝑥 coffees?

​Find the y-intercept (delivery fee) - given in the problem as $6

Multiple Choice

A florist delivers flower bouquets from online orders.

The florist charges a $5 delivery fee.

The total cost to deliver 2 bouquets is $13.

The total cost to deliver 7 bouquets is $28.

Which equation represents the total cost, y, for a delivery of x bouquets?

• y=3x+5

• y=4x+5

• y=5x+3

• y=3x-5

​The Science Club visits a museum. The cost is $9.00 per ticket. Prove the table below is the answer.

Multiple Choice

The Math Club is going to a concert. Each ticket costs $6.50.
Which table below best represents the relationship between the number of tickets, x, and the total cost, y?

​Samantha is driving to visit her grandparents. The linear equation y=60x represents her constant rate of travel, where 𝑥 is the number of hours and 𝑦 is the distance (in miles) from home. How far from home is Samantha after 7 hours of driving?

Multiple Choice

A train travels at a constant speed described by the equation y=75x

where x represents time in hours and y represents distance in miles.

How far will the train travel in 8 hours?

• 450 miles

• 600 miles
• 525 miles

• 750 miles

​Lila deposits $800 in an account earning 5% simple interest per year. How much money will she have in the account after 10 years?



Find 5% of 800 = .05 800 = 40

Multiply that value by 10 years: 40 * 10 = $400

Add to the original amount in the account: 800+400 = $1,200

Multiple Choice

Jamal invests $1,000 in a savings account earning 6% simple interest per year. How much money will he have in the account after 8 years?

• $1,080

• $1,360

• $1,480

• $1,600

​Two stores are having sales on headphones.
Store A: All headphones are 10% off the original price.
Store B: All headphones are 1/8 off the original price.
Which store would have the better sale price for headphones with an original price of $64?

Multiple Choice

Two stores are having sales on backpacks.

Store X: All backpacks are 20% off the original price.

Store Y: All backpacks are 1/4 off the original price.

Which store would have the better sale price for a backpack with an original price of $100?

• Store X, because the sale price would be $80

• Store Y, because the sale price would be $75

• Store X, because the sale price would be $20

• Store Y, because the sale price would be $25

​Sophia wants to buy a tablet. She finds the following offers:
Tech World: $450 with a 10% discount
Gadget Store: $460 with a $15 mail-in rebate
Budget Electronics: $440 with 5% discount
Smart Deals: $470 with a 12% discount
Which store offers the lowest price for Sophia?

Multiple Choice

Liam wants to buy a smartwatch. He finds these offers:

TimeTech: $300 with a 15% discount

SmartBuy: $320 with $20 mail-in rebate

Gadget Hub: $290 with 8% discount

Value Electronics: $310 with 10% discount

Which store will cost Liam the least?

• TimeTech

• SmartBuy

• Gadget Hub

• Value Electronics

​Sophia wants to buy a smartwatch. The original price at all stores is $120. Each store is offering a different sale:

Store A: 30% off
Store B: 25% off
Store C: $35 off

Which store offers the lowest sale price?

Multiple Choice

Liam wants to buy a pair of headphones. The original price at all stores is $75. The stores have the following offers:

Store X: 20% off

Store Y: 15% off

Store Z: $18 off

Which store offers the lowest sale price?

• Store X, sale price $60

• Store Y, sale price $63.75

• Store Z, sale price $57

• Store X, sale price $62