Answer:

Step-by-step explanation:
First, let's start with what we have. If we use
here's what we can put in:

Then we can use one of the given points to find the y-intercept. Since the only complete one is (12,10), we'll use that.

So now we have
.
Now we can use our other point with the missing y-value and solve for y.

So the missing value is 64.
Hope this helps!
Answer:
62.83
because you take 20, divide it by 2 to get the radius then you have the equation 2π(10)
Q:3
Ans: 10.12 x 10 power -5
Q:4
Ans: 5/8
Q:5
Ans: - x cube and + x square