10 books cost $30. To figure it out, it's just 3 times the number of books. XD
Answer:
3*x-9
Difference means subtraction and times means multiplication!
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Answer:
Volume = 1526.04 cubic units
Step-by-step explanation:
Formula for volume of a cone:
V = πr²h/3
If we use 3.14 for pi, we get 1526.04:
V = 3.14(9)^2(18)/3
V = 1526.04