Evaluate the expression
2+1 •16-4

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?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Three times the sum of a number and seven is negative thirty-six. what is the number?