The equation below can be used to determine T, the total cost in dollars to repair a television set at a shop, based on h, the number of hours it takes for the repair,
T-50+35h
What is the rate of change of the total cost with respect to the number of hours?

d

step-by-step explanation:

d

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point