Which of the following slopes show that the set of points c(1, 1), d(3, -4), e(5, 8) are not collinear?

a) 1/3, -5/3, -2/5
b) 1/2, 3, 5
c) -1, 1/2, -3/5
d) 6, -5/2, 7/4

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

How many square inches are in 60 square feet?