Four more than a number is more than 13

Inequality:
Solution

Can someone me with this problem . show your work .

If i have one apple and give you the apple, how many apples do i have?

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?