How to get the answer to percentages

Brett mows 3 lawns each week to make money. He earns $15 for each lawn that he mows. Which expression represents the amount of money Brett has earned after w weeks? Select each correct answer.

Multiply (-12) ( - 2 3) (5 9)

What is 50+_that equal420

two batteries produce a total voltage of 4.5 volts the difference in their voltage is 1.5 volts determine the voltage of the two batteries

What's 15/45 written as a fraction in simplest form? A. 5/3 B. 15/3 C. 3/15 D. 1/3

If the formula = ($x$7 + x8) is copied from cell (a1) to a (a5) - 4 rows lower, what happens?

If you are solving a system of equations and one of your steps is to add the equations, you are using the

Solve the system of equations by elimination and identify which could be a first step of the elimination method for the system. 2x - 3y = 6 3x - y = 2

Molly is wrapping up parts of sandwiches to sell at her sandwich cart. She cuts each sandwich into fourths and then wraps each fourth separately. She says that she wrapped 16 fourths, so she wrapped 16 whole sandwiches. What was Molly's mistake?

Find the product: (they're fractions) (1/2) (3/4)