Choose the correct simplification of the expression 4 over y to the power of negative 3. a) 4y^3 b) 4 over y to the 3rd power c) y to the 3rd power over 4 d) this expression is already simplified. i have attached a picture to make it easier to read the question.

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?

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?