Find the constant of proportionality in the following equation: y=2/3 x

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?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52