B is your answer! All you do for this equation is go oh look m=2/7 well this means y=2/7x and you have a -12 so than you just plug it in. To get y=2/7x-12
Number of students who play both baseball and basketball = 18+9+10-30 = 7
Probability that a student plays both sports = 7/30 = 0.233 = 23.3%
Answer:
11 Squares are there in 11 squares