You start with a number. double it. square the answer. you get 1,296. what number did you start with?

For what values of b will f(x)= logbx be a decreasing function? (16 )

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

Anyone know? will mark brainliest if correct!