Nancy sold a house for 225,900 and earned 4% commission. how much did nanacy earn for the sale of this house? math

Which statements about these triangles is true

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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?