Rate of Change in Word Problem

Nancy is planning a bowling party. The cost for 8 people is $123 and the cost for 12 people is $167. What is the slope (cost per person)? $_____ (type the number only)

The cost of 2.25 pounds of grapes is $6.75. The cost of 5 pounds of grapes is $15. Find the slope in dollars per pound.

$_______ (type the number only)

After 10 seconds on a zip line tour, you travel 50 feet. After 25 seconds, you travel 125 feet. Find the slope in feet per second.

Which equation should be used for this problem? (Hint: Look for a key word!)

• a(1 - %)^x

• a(1 + %)^x

One spring, the temperature rose from -5 degrees to 12 degrees in 24 hours. How much did the temperature rise in 24 hours?

The enrollment at Temple Junior High School has a change of -60 over a 3 year period. What is the average change per year?

Jeff saw 7 identical withdrawals on his bank statement that came to a total of $315. By how much did each withdrawal change Jeff's Account?

Antwon records the outside temperature at 8:00 A.M. and at noon every day. Today the 8:00 A.M. temperature was -3 degrees and the noon temperature was 1 degree. What was the change in the temperature from 8 A.M. to noon today?

After finishing his workout, Justin's heart rate decreased 3 beats per minute for each of the next 4 minutes. What was the change in Justin's heart rate after 4 minutes.

A stock falls 7 points each day for 2 days. What integer represents the change in stock price for the 2 days?