Perry designed the murals by drawing small sketches first. his sketch for a mural measures 5 inches wide by 7 in. tall. if he wants to paint it on a wall that’s 45 feet wide, how tall must it be to stay in proportion?

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

Precalculus question, image 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! )