I haven't done this kind of work in a bit, but I believe it's 8.
Answer:
21. C
22. D I got 263.89
23. I'm not sure about this one
24. C
25. D
Step-by-step explanation:
I hope the ones i answered were correct if not i am sorry
X+6y+22 combine like terms
Answer:
38 legs
Step-by-step explanation:
dog=4 legs
horse=4 legs
giraffe= 4 legs
duck = 2 legs
2x4+4x4+1x4+1x2
8+16+4+2=38
Answer:

Step-by-step explanation:
1) use this rule:
× 

2) simplify 4 * 2 to 8

3) simplify 5 * 3 to 15
