Suppose that you are opening a 1,000-square- foot baseball card store in a shopping center. You have signed a lease that requires you to pay a monthly rent of $1.75 per square foot, plus 5 percent of your gross annual sales. What is the total amount of rent you will pay in one year if you have sales of $85,000? ​

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)