Answer:
9
Step-by-step explanation:
Put x as 1/2 and evaluate.
3^(2(½) + 1)
3^(1+1)
3²
= 9
30 books
bookshelf is 45 inches
each book is 1 1/2 inches
45 / 1 1/2 = 30
30 books can fit on the shelf
oh ok thanks for free points
