9x9+81
81/7= 81 over 7, or 11.6
1 stone = 20 square inches
1 stone * 30 = 20 square inches * 30
30 stones = 600 square inches
7 books with a cost of 28$ then a 2$ charge which will put him right at 30
Answer:
That’s a good helicopter
Step-by-step explanation:
