Please help with this

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

Solve 2^x=32 and rewrite this equation in a logarithmic form

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.