Which of the following is the equation of a circle with center (5, -2) and a radius of 3?
a. (x - 5)^2 + (y +2) ^2 = 9
b. (x + 5) ^2 + (y - 2) ^2 = 9
c. (x - 5)^2 + (y + 2) ^2 = 3
d. (x + 5) ^2 + (y - 2)^2 =3

A

Step-by-step explanation:

formula for the eqn of circle is (x-h)^2+(y-k)^2

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this