In science class, jade uses a graduated cylinder with water in it to measure the volume of some marbles. after dropping in 4 marbles so they are all under water, the water in the cylinder is at a height of 10 milliliters. after dropping in 6 marbles so they are all under water, the water in the cylinder is at a height of 11 milliliters. what is the volume of 1 marble?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)

Which number completes the inequality? 2/3 < _ < 7/9

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}