Will 100% give brainleist.

what do you want me to answer?

Step-by-step explanation:

part a:

the x-intercept of the graph represents that there was no profit when the price of the eraser was $ 8 and also there will be no profit when no eraser is sold.

and the maximum value of the graph represents that there was a maximum profit of $ 2760 obtained by the company when the company sold erasers at a cost of $ 4 .

( since, the vertex of the graph is at (4,270) )

the interval where the function is increasing is: (-∞,4)

this represents that the profit is increasing when the erasers are sold at less than $ 4

and the function is decreasing in the interval (4,∞)

this represents that the profit is decreasing when the erasers are sold at a price greater than $ 4.

part b:

the average rate of change from x=1 to x=4 is calculated by:

it represents that the profit of the company is increasing at the rate of $ 50 per increase in the prize of the eraser.