You know the whole and one part you can blank to find the other part sum or subtract

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

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

How can you tell when x and y are not directly proportional?