I need the answer key to edgenuity common core math 8 unit 1 test and i need it quick because some teacher just reported me on my last try

What is the solution of sqrt x+2-15=-3

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

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)