Question

:

Krissa exercises daily by walking. She aims to walk at a steady rate of 3.4 miles per hour.


Part A

If t represents time in hours and d represents distance in miles, write an equation that models the relationship between these variables.

​ d=


Part B

Use your equation to calculate the distance Krissa will jog in 58 of an hour

Krissa will jog

miles in 58 of an hour.

Part C

Use your equation to calculate how long it will take for Krissa to walk 5.44 miles.

It will take Krissa

hours to jog 5.44 miles.

Answer 1

Answer: a. 3.4t (miles)

b. 2.125 miles

c. t = 1.6 hours

Explanation:

A) We will use the relation:

Distance = Speed × Time

Distance= 3.4 × t

= 3.4t (miles)

B) If t= 5/8

Distance d= 3.4 × 5/8

= 3.4 × 0.625

= 2.125 miles.

C) If the distance d= 5.44,

Time will be:

d= 3.4t, and we know that d=5.44

Therefore, 5.44 = 3.4t

t = 5.44/3.4

t = 1.6 hours