Explain how you can use 25% of a number to find the number

Find the value of x for which the lines are parallel.

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?

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?