Answer:
k = 3.70
Step-by-step explanation:
Eliminate parentheses, then subtract the constant term on the left
8.5 +4 -10k = -24.5
-10k = -37 . . . . . . . . . . 12.5 subtracted from both sides
k = 3.70 . . . . . . . . . . . both sides divided by -10 (no rounding required)