your food bill at a restaurant is 28.00. You owe 15% for tip and 6% for sales tax. What is the total amount that you will pay

1. what is the measure of ∠abc? what is the measure of ∠abd?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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?