Question

The function f(x) = -x2 + 40x - 336 models the daily profit, in dollars, a shop makes for selling donut

combos, where x is the number of combos sold and f(x) is the amount of profit.
Part A: Determine the vertex. What does this calculation mean in the context of the problem? Show
the work that leads to the answer. (5 points)
Part B: Determine the x-intercepts. What do these values mean in the context of the problem? Show
the work that leads to the answer. (5 points)
(10 points)

Answer 1

This question should be worth atleast 20 points

Explanation:

a. For the vertex, input the funtion into the calculator, and see where the turning piont is, that is the vertex.

b. Solve using this vormula.

x= (-b ±
`√(b^2 - 4ac)`)/2a

you will get two asnwrs, both are correct.