Tim paid 216.14, tax included, for a stereo system. If he paid $17.39 in sales tax, what percent sales tax did Tim pay?

Use the graph of the sine function y=2sinθ shown below

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?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?