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

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15