Identify the values that create ordered pairs that are a solution to the equation 3x-5y=20

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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)

The function show two sisters' savings account and the rate at which they plan to deposit money