Looks good to me. Calculation is correct. Although you might want to add to #1 your description; that the width of the rectangle is the circumference of the circle (w = 2πr) and that you add the surfaces together to get the total surface area.
total surface area = area of rectangular part + area of circular parts
SA = 2πrL + 2πr²
The 15% is 1.8
All you have to do is multiply 12 by .15 to get the answer, which is 1.80
They are alike because you are just doubling the number by 2
F(0) = replace every x with 0
=9.0710678119
=9.07
Hey need to sell 1200+ more because if they want more than $3100 and they already have $700 they need $2400 and divide that by 2.
