Elle is 6 years younger than felicia. marta is twice as old as felicia. if marta is w years old, a) find the age difference between marta and elle. b) write an expression that shows the three girls' average age.

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Find the roots of the equation below. x^2 - 6 + 9 = 0

Find the zeros of each function. f(x) = x^2 + 5x - 6