View the example below. Which method of solving for systems of equations might be best for this system? 2x + 3y = 90
4x - 2y = 28
1. Graphing
2. Substitution
3. Elimination

What is the value of x? enter your answer in the box. photo attached.

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect