Find midpoint between point A(5, 3) and B(9, −1).

Write a corresponding real world problem to represent 2x - 125=400

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

How do you use the elimination method for this question? explain, because i really want to understand!