Advd is on sale for $1.05 off. this is a 15% discount from the original price. use an equation to find the original price.

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)

With alll of except for the 2 that i did already

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.