Write a sine function that has a midline of 2, an amplitude of 4 and a period of 8π (8pi)

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?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Which expression is equivalent to -5(3x - 6/7)