What equation is depicted below?

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

Me. i can't figure out this question. give an explanation too. .

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?