Solve the system of equations by substitution:

3x=y

2x+5y=-34

How do i divide exponents by exponents

What number is halfway between 3000 and 4000

81*22 estimate. then find product

What is the measure in degrees of angle D

Find the sum of the first 20 terms of an arithmetic series if the first term is 4 and the common difference is 3.

An advertisement states that a can of paint will cover 480 square feet. How many gallons of paint are needed to cover 1,680 square feet?

Mrs McDonald spent 24.65 at a yard sale on Saturday. on Sunday she went to another sales and spent 14.95 more than she did on Saturday. what is the total amount that Mrs McDonald spent on both yard sales

Linda purchase a prepaid phone card for $30. Long distance calls cost $.17 a minute using this card when do use her card. Linda use her card only to make a long distance call if the remaining credit on her card is $22.

Consider this equation: - 2x - 4 + 5x = 8 Generate a plan to solve for the variable. Describe the steps that will be used.

What is the graph of the function y=2x2^x