Angus uses the expression in the box to calculate the total cost of tiling his kitchen. The expression includes the cost of the tiles, other raw materials, the labor charges of a
contractor to execute the project.
70x(x + 5) + 100
If the length of the kitchen is 5 feet more than its width, what does 70 represent?
A the labor charges of the contractor
B the total cost of the raw materials
C the total area of the kitchen
D the cost of raw material per unit area
7

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.