katie buys several pairs of socks for $3 per pair. which equation represents katie's total cost, c, when she buys s pairs of socks and why

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)

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1