Bus a takes 21 minutes to complete its route. bus b take's 35 minutes to complete its route. if both buses leave the station at 7: 30
a. m at what time will they arrive at the station at the same time? ?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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)

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