W=gm for m

Q=1/2p + 15, for p

To solve this equation for p, we need to isolate the p term. To start with, subtract 15 from both sides, leaving mQ - 15 = 1/2p. The second step is to then multiply both sides by the reciprocal of 1/2, or 2. This isolates the p term. As a result, we have p = 2mQ-30.