Question

On a bicycle, Rosa rides for 3 hours and is 20 miles from her house. After riding for 5 hours, she is 32 miles away.What is Rosa's rate?

Answer 1

Answer:

Rosa's rate is 6 miles per hour

Step-by-step explanation:

Rosa rides for 3 hours and is 20 miles from her house.

After riding for 5 hours, she is 32 miles away

Let x represents the number of hours

and y represents the number of miles away

(3,20)  and (5,32)

rate is the slope

to find rate we find change in miles over change in hours

$slope =\frac{y_2-y_1}{x_2-x_1} =\frac{32-20}{5-3} =6$

so Rosa's rate is 6 miles per hour