Functions A and B give the population of City A and City B, respectively, t years since 1990. In each function, population is measured in millions. Here are the graphs of the two functions

Which function value is greater: A(4) or B(4)?

Are there one or more values of t which the equation A(t) = B(t) is true? If so, which one or which ones?

Identify at least two values of t at which the inequality B(t) < A(t) is true.

Step-by-step explanation:

1. B(4)   2. t = 6    3. t = _  (put any number from 8 to 12)

Step-by-step explanation:

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240