What single decimal multiplier would you use to increase by 7% followed by a 4% decrease?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Math question.. plz me .. best answer all

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! )