C. 7 is your answer
Hope this helps & good luck. :)
Answer:
$45
Step-by-step explanation:
4 lbs = $18
2 lbs = $9
10 lbs = $45
3x-8<=23
3x<=23+8
3x< =31
X< = 10.3
or
-4x+26>=6
-4x>=-20
X>=5