Add the two expressions.

3z−4 and 2z + 5

I need it asap please help!

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

Ineed to know the answer to this algebra question.

Nikolas calculated the volume of the prism. his work is shown below.