Need on this problem fast and plzz

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?