explain what the marginal revenue is. interpret r? (15) if 15 means 15 bicycles.
in application, how do we use the differential in solving problems? what kind of problems do we need to use the differential to solve?
explain why knowing derivative of natural logarithmic function enables us to find derivatives of any other logarithmic functions.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

answer: the answer is ann

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.