Question

Jeremy looked at this table of prices and said the cost for renting a bike is $7.00 per hour.

A 2-column table with 3 rows. Column 1 is labeled Hours with entries 2, 4, 6. Column 2 is labeled Cost (dollars) with entries 7.00, 14.00, 21.00.

What mistake may Jeremy have made? Explain.

Answer 1

Jeremy did not find the unit rate. He just used the first dollar value in the table.

The unit rate is found by dividing the cost by the number of hours and checking that they are equal.

In every set of values, the unit rate is $3.50 per hour.

Explanation:

Answer 2

Jeremy is looking at the rate for renting a bike for 2 hours. To find the rate for one hour divide 7 by 2. The rate for renting a bike for one hour is $3.50.