Find the circumference and area of the circle. express answers in terms of pi and then round to the nearest tenth.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

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?