What is two x squared in exponential form

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

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)