Mike bought a box of 12 golf balls for $18. solve the equation 12x = $18 to find the price of each golf ball. answers: $1.25, $1.50, $1.75 do tmrw need asap pls and

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! )