Martin modeled the distance, y, that runners traveled during a race a function of the time, that they ran. Which would best describe the domain of this function?

All positive real numbers

Step-by-step explanation:

Given

The model can be represented as:

Required

Determine the domain

This means that we list out possible values of x.

If x represents time, then it is impossible for x to be negative.

This implies that x can take any value as long as it is greater than or equal to 0.

Hence, the domain is all positive real numbers

c. 16 units

step-by-step explanation:

mark brainliest and have a great day!

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2