Which expression is equivalent to 4 to the power of 4 x 4 to the power of -9? A). 413

B). 45

C). 1 over 4 to the power of 13

D). 1 over 4 to the power of 5

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.