8 A store has a sale. Customers can buy one item at full price and take 50% off the cost of a second item with a lesser price. Nikia buys one item with a price of $80
and another item with a price of $120. With the sale, what percent discount does
Nikia receive on her total purchase? Show your work.
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Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

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)

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b