What Is the Constant Rate of Change?

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2SW CCA Review

1. What is the constant rate of change?

1. It took Mario 8.5 hours to earn 161.5 stars. What was this average rate of stars per hour?

1. What is the constant rate of change in the graph?

1. How much money did Trevor save in dollars per month? (Hint: find constant rate of change)

1. It took Apple Bloom 3 hours and 5 minutes to carve 50 apples. What was her average apple carving rate?

1. The Texas Longhorns had 6 points in the first hour, 12 points in the second hour, 18 points in the third hour and 24 points in the fourth hour. At what rate are they scoring?

1. What is the constant of proportionality?

1. Find the unit rate.

1. Taylor Swift wants to reserve a room at a restaurant. The room costs $5000 for 5 hours. She must also pay a $500 deposit. What percent of the cost of the room is the deposit?

1. A machine can make 24,000 ribbons in 8 hours. A second machine can make twice as many ribbons per hour. What is the constant of proportionality between the number of ribbons and the number of minutes for the second machine? (hint: don’t forget to convert the hours into minutes!)

1. The table shows the amounts four companies paid for commercials. How much less did Company Y pay than Company X per second for their commercial, in dollars per second?

1. Hope wants to participate in a dance recital. She cannot miss more than 18% of the 40 classes before the recital. What is the minimum numbers of classes Grace must attend in order to be in the recital?

1. The length of Buzz Lightyear’s room is shown. The ratio of length to width is 4:3. What is the width of his room?

1. Calculate the cost of a $25.00 hat with a $5.00 discount and a 5.5% sales tax? Round to the nearest cent.

1. Mulan wants to put carpet on the floor of the room shown. Carpet costs $12.00 per square yard and the sales tax is 5%. What is the total cost of the carpet?

1. The table shows Olivia’s height at two ages. What is the percent of increase in Olivia’s height?

1. James Coney deposited $5,000 into a savings account that earns 5% simple interest. How much interest did he earn after two years?

1. Claudia deposited $3,000 into a savings account that earns 4% interest compounded annually. Part of Claudia’s bank statement is shown. How much interest does she earn in Year 3? Round to the nearest cent.

1. What percent of the total budget is rent and clothing? Round to the nearest percent.

1. What is the price of an 8G smart phone from Socrates Phones after the incentive?