Total profit is defined as total​ revenue, R(x), minus total​ cost, C(x), and is given by the function ​P(x)=​R(x)​-C(x). Given ​R(x) =58x - 0.4x^2 and ​c(x)=3x+13, find each of the following. ​b) ​R(80)

4.

step-by-step explanation:

it have the same area.brainliest

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.