Can someone help me plz I will mark brainliest

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Factor this polynomial completely x^2-64

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes