Unit 6 Day 2 Review

What is the solution to the equation below?

7x - 4 = 3 + 8x

• x = 7

• x = -7

• x = 2/7

• x = 11

• A

• B

• C

• D

Find the solution to the following equation:

10x + 9 = 4x - 9

​ (a)  

• 0
• 3
• -18
• -3
• 7/9

Is this mapping a function or not a function?

​ (a)  

• Not a function
• Function

The length of AB is greater than the length of AD. Which inequality represents this solution?

​ ​ ​ (a)  

• 9x - 16 < 1.5x + 42
• 9x - 16 = 1.5x + 42
• 9x - 16 ≤ 1.5x + 42
• 9x - 16 ≥ 1.5x + 42
• 9x - 16 > 1.5x + 42

A yellow hot-air balloon is 120 feet off the ground and is rising at a

rate of 8 feet per minute. An orange hot-air balloon is 160 feet off

the ground and rising at a rate of 6 feet per minute. After how long

will the yellow balloon be higher than the orange balloon?

• 120 - 8x > 160 +6x

• 8x + 120 > 6x + 160

• -120 +8x > -160 + 6x

• 6x +160 > 8x + 120

Two seventh-grade classes are selling raffle tickets to raise money.
-One class is selling tickets for $3.50 each and has already raised $400.
-The other class is selling  tickets for $2.00 each and has already raised $300.
Which equation can be used to find m, the number of tickets each class needs to sell so that the total amount raised is the same for both classes?

• 5.5m = 700

• 3.50m = 2m + 300

• 3.5m + 400 = 2m + 300

• 3.5 + 400m = 2 + 300m

How is 782,000,000 written in scientific notation?

• 7.82 x 10 ⁸

• 7.82 x 10 ^-8

• 78.2 x 10 ⁷

• 78.2 x 10 ^-7

Renting games online from Netwii costs $3.33 per game  with no monthly fee.  

Renting games online from HDO costs $2.00 per game plus a monthly fee of $10.00.
Which inequality represents the situation when the monthly cost at Netwii is more than the monthly cost at HDO?

​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ (e)  

• 3.33x
• >
• 2x
• +
• 10
• -10
• -2x
• <
• -

The inequality shown below represents fees for two different apartments.

500x + 700 < 650x + 200

Which situation below does this inequality represent?

• Apartment A charges a $700 deposit and then $500 per month. Apartment B is equal to Apartment A charging $650 per month with a $200 deposit

• Apartment A charges a $700 deposit and then $500 per month. Apartment B is greater than Apartment A charging $650 per month with a $200 deposit.

• Apartment A charges a $700 per month and then $500 deposit. Apartment B is greater than Apartment A charging $650 deposit with $200 per month.

• Apartment A charges a $700 deposit and then $500 per month. Apartment B is less than Apartment A charging $650 per month with a $200 deposit.