Write an exponential function that contains the points (1, 18) and (2, 9) .

Identify the parent function that can be used to graph the function f(x)=3(x-9)2

What is the perimeter of a rectangle if the length is 5 and the width is x?

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2