Find an equivalent system of equations for the following system: 2x + 4y = 4 −5x + 5y = 5 2x + 4y = 4 −3x + y = −1 2x + 4y = 4 7x + 5y = −1 2x + 4y = 4 7x − y = 5 2x + 4y = 4 7x − y = −1

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Which of the following contains a variable?

I’m confused on how to work the pie charts