The profit p (in hundreds of dollars) that a company makes depends on the amount x (in hundreds of dollars) the company spends on advertising according to the model. p(x) = 230 + 40x - 0.5x2 what expenditure for advertising will yield a maximum profit?
a) 40
b) 0.5
c) 230
d) 20

Option A

Step-by-step explanation:

Given that The profit P (in hundreds of dollars) that a company makes depends on the amount x (in hundreds of dollars) the company spends on advertising according to the model.

We can use derivative test to find maximum

Differentiate two times the profit funciton

Equate I derivative to 0

we get

II derivative is alrways negative

Hence profit is maximum when x=40

Option A is right

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars