Use the substitution method to solve the system of equations. choose the correct ordered pair. 3x – y = 7 2x – 2y = 2 a. (2, 2) b. (3, -1) c. (3, 2) d. (2, -2)

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

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

What is 1/3x5 on anuber line what does it look like on a number line