About `3.2 x 10^{8}` people live in the United States. About `3.9 x 10^{7}` people live in Canada.

And about `1.1 x 10^{8}` people live in Mexico.

About how many people live in all three countries altogether?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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.

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1