Answer:
None.
Step-by-step explanation:
The fact that you don't know how to solve this means you haven't studied. At all.
But, I'll give you some hints:
1. The perimeter of a semicircle is half the perimeter (or length) of the circle.
2. The length of a circle is given by the formula 
Answer:
$32.20
Step-by-step explanation:
3 pounds are $27.60 and 1/2 a pound is half of $9.20.
So 3.5 gallons would be $32.20
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Answer:

Step-by-step explanation:
<u>Given [Missing piece]</u>
--- height
--- radius
--- number of cones
Required
How much foam for 120 cones
First, calculate the volume of 1 cone





So, the amount of foams needed for 120 is:



Answer: f(x) is just a fancy way of writing y in an equation
Step-by-step explanation:
Example: f(x)= 2x+4 is the same as y= 2x+4