(The sum of 5 times a number and 6 equals 9) Translate the sentence into an equation

use the variable c for the unknown number

does anyone know the answer to this ?

How do i do this activity, is appreciated

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?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10