F(x) = x², g(x) = -3x3/2; x = 36

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

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.

i agree because i see the other persons thinking is clear