SOMEONE PLEASE HELP ME

The equation is C, and the correct answer is 6 (D)

Step-by-step explanation:

We first look for the correct equation. If Matt charges 9 dollars per hour, and earned a total of 99, then we known that 9*the number of hours = 99. Moving on, we know that he babysat Friday night for 5 hours, but we don't know the number on Saturday. BUT we do know that 5+saturday hours = total number of hours. Putting this into a formula, we get 9(5+x (where x = #of hours worked on saturday) = 99(total number)

Our final equation is 9(5+x)=99.

Solving this by dividing both sides by 9, we get 5+x=11. Subtracting 5 from both sides gives us x = 6.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

4.5%

step-by-step explanation: