I need someone to explain to me how this is correct because i’ve been trying different solutions.
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a political campaign wants to estimate the number of adult residents who voted in the last city election. answer the following.

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

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.

We just started the introduction into circles and i have no idea how to do this.