Please help me I will give Brainiest to who can answer first. :)

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

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.