What percent is 25 out of 75

Icould really use some with this question.

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.