Answer:
P=20%
Step-by-step explanation:
Let's suppose that each question in the test has one and only one correct answer. This means we have 1 desired outcome out of the total 5 desired outcomes. Therefore:
Probability=#of desired outcomes / #of possible outcomes
or


P=0.20
P=20%
Let the cost of a shirt be s.
Three shirts = 3s.
3s + 15 ≤ 80 (Answer F)