A new tech start-up is trying to sell their app through the various app stores. Looking at similar apps already on the market, they have created a sales demand
graph (shown below). The intercepts mean that at $0 they would expect to sell
10,000 copies of their app, but would sell none if they charged $5.

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)

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree