Bob bought 3 packs of model xars. he gave 4 cars to ann. bob has 11 cars left. how many model cars were in each pack

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Solve 3x-18=2y and 5x-6y=6 by elimination show work

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)