Determine whether the ordered pair (3,-5) is a solution to the system -2x+y=-11 & 2x-2y=-4

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?

What is the measure of the smallest angle in the diagram? 15 29 32 45

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?