Kaia's mom is having triplets. A tree diagram showing the sample space is shown. Which statement is not correct?

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Simplify using positive exponents only.

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! )