Ineed on number 2. i don’t quite understand how to solve this problem.

A: involved in a club

B: studied 4+ hours/day

We're given that P(A) = 35.7%, P(B) = 27.8%, and P(A or B) = 53.4%. We want P(A and B).

Use the inclusion-exclusion principle:

P(A and B) = P(A) + P(B) - P(A or B)

P(A and B) = 35.7% + 27.8% - 53.4% = 10.1%

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5