Henry knows that the circumference of a circle is 18 pie inches. What is the area of the circle?
O 36 x in 2
O 81x in 2
O 162 x in?
O 324 sin?

81x in 2 (B)

Step-by-step explanation:

A = πr^2

Radius = 9

The Radius is 9 because you divide 18 by 2, the equation for Circumference is 2πr.

81

Plug 9 into r in the Area equation.

π9^2

81π

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

answer:   y=2x-3

step-by-step explanation: