Please Help!!! Evaluate the expression for the given values of the variables.

(n + 5)2 for n = −7

When n = −7, the expression is equal to
.

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

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?

Simplify the expression. -2/5(10+15m-20n)