Checkpoint 3 Review

American Black Ducks migrate a great distance every year. A typical bird will travel 2,739 miles

in 33 days. Which of the following best represents this trip with a constant unit rate of

travel?7.4A

• y = 83x

• 
• 
• 

Tags

CCSS.8.EE.B.5

Which equation represents the rate of change between the area of a card, y, with a side

length of x? 7.4A

• y= x +18

• 
  

  $y=\frac{x}{4}$

• y= 4x

• y= 2x + 12

Tags

CCSS.HSF-LE.A.1B

Last week, Ralph's gerbil drank 20 mL if water. This week he drank 16 mL of water. By what percent did the gerbil's intake of water decrease?

• 25%

• 4%

• 80%

• 20%

Tags

CCSS.6.RP.A.3C

If Joe plans to buy 1 pairs of jeans, which store offers a better deal after the discount?

• Store A, because Store B is more expensive after the discount.

• Store B, because Store A is more expensive after the discount.

• Store A because Store B is less expensive after the discount.

• Store B, because Store A is less expensive before the discount.

Tags

CCSS.6.RP.A.3C

Marketa bought 2.7 pounds of walnuts for $25.54. Approximately how many pounds of walnuts can Marketa purchase for $1?

• 9.46 pounds

• 0.11 pounds

• 22.84 pounds

• 0.37 pounds

Tags

CCSS.6.RP.A.3B

What is the constant of proportionality that relates the distance traveled y, to the elapsed time in seconds, x, represented by this data?

• $\frac{1}{6}$

• 2

• 3

• 6

Tags

CCSS.7.RP.A.2B

Louis noticed that on a ruler, 5 inched is equal to 12.7 centimeters. The diagonal on his computer screen measures 18.5 inches. Which proportion could Luis use to find x, the length of the diagonal of the computer screen in centimeters?

• $\frac{12.7}{5}\ =\ \frac{18.5}{x}$

• $\frac{18.5}{12.7}=\frac{x}{5}$

• $\frac{12.7}{18.5}=\ \frac{x}{5}$

• $\frac{5}{12.7}=\frac{18.5}{x}$

Tags

CCSS.7.RP.A.3

Omar wants to purchase a new bicycle for $134.45 and helmet for $22.55. If the sales tax rate is 8.25%, what will ne the total amount of Omar's purchase including sales tax?

• $165.25

• $286.53

• $158.30

• $169.95

Tags

CCSS.7.RP.A.3