7th Grade Check-In #1 Review - NC.7.RP.2 (part 3)

7th Grade Check-In #1 Review - NC.7.RP.2 (part 3)

Multiple Choice

LaShonda purchased 42 gallons of gas for $121.38. Which equation represents the cost, y, of x gallons of gas?

• $y=2.89x$

• $y=1.99x$

• $y=1.45x$

• $y=0.35x$

Train A

Two trains are traveling in the same direction on parallel tracks. Train A's distance and time are graphed below.

Train B

Train B's average speed can be represented by the equation

 $d=35t$  
where d is the distance and t is the time. 

Multiple Choice

If both trains are traveling to a destination 280 miles away, what is the difference in the amount of time it takes the two trains to get to their destination?

• 0.5 hour

• 1 hour

• 2 hours

• 5 hours

Tomato Prices

The graph to the right shows the prices at which Joanna sells tomatoes according to their weight.

Multiple Choice

Which rate shows the price at which Joanna sells tomatoes?

• $0.83 per pound

• $1.20 per pound

• $1.50 per pound

• $2.50 per pound