Which equation has solution x = -3?

a) 2x - 7 = -1
b) 3x + 8 = 1
c) 1/2 x + 8 = 10
d) 1/2 (2x - 6) = -6

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be