Gabe makes 13.50 an hour. serena worked 21 hours . how much more an hour does serena make over gabe.

Abag contains 3 blue and 2 green marbles. what is the probability of drawing a blue marble followed by a green marble, without replacing the first marble?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Find the percent cost of the total spent on each equipment $36, fees $158, transportation $59 a. 14%, 62%, 23% b. 15%, 60%, 35% c. 10%, 70%, 20% d. 11%, 62%, 27%