Solve the formula A= pi r^2 for r

sqrt(A/pi)= r

Step-by-step explanation:

A= pi r^2

Divide each side by pi

A/pi= pi r^2/pi

A/pi=  r^2

Take the square root of each side

sqrt(A/pi)= sqrt( r^2)

sqrt(A/pi)= r

b i think

step-by-step explanation:

not really sure

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: