X-2y=8 in y=mx+b please help me

The circumference of a circle is 5 pi cm. what is the area of the circle?

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

For the equations below which statement is true ? -2x=14 6x=-42