cosette

Disprove: For every integer a, if 8 divides a, then 6 divides a. im still stuck. i wrote: Disproof. Suppose 8|a. by definition of divisibility, we know 8|a means there is an integer b with a=8b. There is not value of y.

i don't know what it mean "~" Exercise: Describe the practical meaning of ~(p v q) using sentences.

Find the break-even point for a firm manufacturing bicycles whose cost function is given as C (x) = 150x + 20,000 and whose revenue function is given as R(x) = 270x.

i mean value of b