A 14 cm water balloon forms a perfect circle. It has an 8 cm diameter. What is the approximate volume of water held by the balloon? Please hurry

Let f(x) = 1/x^2 (a) use the definition of the derivatve to find f'(x). (b) find the equation of the tangent line at x=2

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year?

Which set of fractions are ordered from least to greatest