(4,4) and (-2,-2) round to the nearest tenth

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

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?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.