At a lemonade stand, the first cup costs $1.50, and refills cost $0.20 each. if a customer paid $1.90 in total for his first cup and refills, how many refills did the customer order?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Precalculus question, image attached.