Ratio and Rates Expressions Equations

A ratio that compares the inaccuracy of an estimate(amount of error) to the actual amount

• Percent of Change

• Percent Error

• Discount

• Ratio

Is a symbol for a number we don't know yet(usually represented by a letter).

Examples: x,y,a,b,c

• Linear Expression

• Variable

• Coefficient

• Exponent

A comparison between two related quantities

• Ratio

• Percent

• Rate

• Discount

There are 50 cookies and 35 cupcakes leftover at a bake sale. What is the ratio of cookies to cupcakes?

Your answer must be in simplest form.

• 10:7

• 7:10

• 35:50

• 50:35

Which equation best represents the relationship between x and y?

• x = 15y

• y = x + 15

• y = 15x

• x = y + 15

Which is NOT equivalent to 3:5?

• 15:25

• 9:15

• 21:28

• 30:50

What is 4/5 as a percent?

• 80%

• 20%

• 45%

• 5%

Convert 68% to a decimal and fraction.

• .68 and 17/25

• .68 and 6/8

• 6.8 and 6/8

• 68 and 68/100

Find the unit rate.
72 miles every 4 hours

• 36 m.p.h.

• 72 m.p.h.

• 288 m.p.h.

• 18 m.p.h.

Coach Montes bought some hot dogs for $3 each. Coach did not spend more than $14 on the hot dogs. Which inequality can be used to find h, the number of hot dogs that Coach could have bought?

• 3h - 3 ≥ 14

• 3h + 3 ≤ 14

• 3h ≥ 14

• 3h ≤ 14