Arectangle has a length of 8 inches and a width of 5 inches. if its length is increased by 50% and its width is reduced by 25%, find the percent change in the area of the rectangle.

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)

Math it's appreciated. (picture provided)

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25