Can someone plz tell me the answers for these questions : )

True or false? a triangle can be circumscribed about a given circle

7x+8y=-18, 4x-9y=-3 solve the system of equations

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?