Choose the equation that is equivalent to this statement. 90 is 70% of x

90 x 0.7 = x
x/90=70/100
90x=0.07
90/x=70/100

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi

Which of the following expressions is equal to 2x^2+8

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8