Determine whether relation is a function and (for item 7) determine the domain and range of a function

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

Quadrilateral ghjk has vertices g(2, 3), h(8, 2), j(6, 8), and k(3, 6). it is transformed according to the rule t(–4, –5). what are the coordinates of g”? (–7, 3) (–2, 2) (–1, –7) (2, –2)

If the average of x,y and z is 15 what is their sum