Solve -5√x = -15

a. x =7
b. x = -7
c. x = -9
d. x = 9

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Measure of angles 31 (x+4) (3x+9) me

X+y=-4 x-y=2 use elimination with adding and subtraction