Astudent on the track team runs 45 minutes each day as a part of her training. she
begins her workout by running at a constant rate of 8 miles per hour for a minutes,
then slows to a constant rate of 7.5 miles per hour for b minutes.
which equation describes the relationship between the distance she runs in miles, d,
and her running speed, in miles per hour?
a. a + b = 45
b. sa+ 7.50 =d
6 8) +7.50 =d
d. 8(45 – b) + 7.5b =d

D

Step-by-step explanation:

The basic equation to solve this would be D = RT, which is

D is Distance

R is Rate (speed)

T is time

To find total distance D, we can find individual distances for two legs of the whole.

First Leg:

R = 8

T = a

D = 8a

Step-by-step explanation:

56

step-by-step explanation:

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.