The graph below shows a company's profit f(x), in dollars, depending on the price of erasers x, in dollars, being sold by the company:
300 + f(x)
270
240
210
180
150
120
90
60 +
30
Part A: What do the x-intercepts and maximum value of the graph represent?
What are the intervals where the function is increasing and decreasing, and
what do they represent about the sale and profit? (6 points)
Part B: What is an approximate average rate of change of the graph from x = 1
to x = 4, and what does this rate represent? (4 points)
(10 points)

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

113.42

i hope that is right.

step-by-step explanation: