Cedric is twice as tall as his younger sister. His younger sister is 35 inches tall. Write an equation to represent Cedric’s height and solve it.

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)

What is the value of f(x) = 2.2 for f(-2)?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?