Answer:
Option C
Step-by-step explanation:
Option A:
[tex]4(-1)+9=20\\\\-4+9=20\\\\\boxed{5\neq 20}[/tex]
Option B:
[tex]-4(-1)-5=-15\\\\4-5=-15\\\\\boxed{-1\neq -15}[/tex]
Option C:
[tex]-3(-1)+15=18\\\\3 + 15 = 18\\\\\boxed{18=18}[/tex]
Option C is the correct answer.
Option D:
[tex]-5(-1)-15=-22\\\\5-15=-22\\\\\boxed{-10\neq -22}[/tex]
Hope this helps.
