There are teaspoons of salt in the kitchen. Mrs. Jackson used of the salt when she was making a recipe. How much salt did she use? teaspoons.

Can some one me, i’ve been asking for so long

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)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?