Someone help me. i don’t understand this lol

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

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10