Need with this i do not under this and i need to show work

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

Which system of linear inequalities is represented by the graph? + l tv x-3y > 6 and y > 2x o x + 3y > 6 and y o x-3y > 6 and y> 2x o x + 3y > 6 and y > 2x + 4 la +

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).