Please answer correctly

What signals you that factoring by grouping is the best method to use when factoring a problem?

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

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?