What describes the components of the arithmetic sequence formula?

Which is the graph of the function y=2(4)^x

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

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! )