The scale factor used is .5 because 7, 8, and 10 multiplied by .5 will equal 3.5, 4, and 5.
use distributive property
0.5 x -10 = -5
0.5 x k = 0.5k
0.5(-10 + k) = 0.5k -5
48 is
80% of 60
Divide 48 over 60:

Convert your decimal to a percentage:
Answer is b hope this helps
X+6 > -18+9x
18+6 > 8x
24 > 8x
3 > x