An electrician charges $40 to come to your house. she also charges $55 for each hour that she works. the electrician charges you a total of $ 190. how many hours does the electrician work work at your house? use h for the number of hours.

How do you use the elimination method for this question? explain, because i really want to understand!

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?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')