Answer:
-23x = 7
Step-by-step explanation:
-3x - y =0
×5. ×5 ×5
-15x -5y = 0
-8x +5y = 7
-15x -5y -0
-23x = 7
Your question is very confusing but x=8 so just plug in 8 where you see X
Answer:
$350
Step-by-step explanation:
7*10=70
Multiply by cost
70*5=350