The formula for finding the approximate volume of a cylinder is v=3.14r^2h where r is the radius and h is the height. The height of a cylinder is 19.35 cm and the approximate volume is 3400cm^3. Find the radius of the cylinder to the nearest hundredth of a centimeter.

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Which product is positive a is 2/5 -8/9 -1/3 -2/7 b is -2/5 8/9 -1/3 -2/7 c is 2/5 8/9 1/3 -2/7 d is -2/5 -8/9 1/3 2/7

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)