Given f(x)={2cos(piX, for x<-1 2/cos(piX), for x>-1
What is lim f(x)

-2

-1

1

2

Which of the following graphs represents the function f(x) = 2^x

Anyone know? will mark brainliest if correct

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.