Combine these like terms:
5. 3abc⁴ and 101abc⁴
A. 104abc
B. 104abc⁴
C. 303abc⁴
D. 3abc⁸
6. Problem is in picture
7. Which is a like terms to 3a?
A. 20a
B. a³
C. 3b
D. 3ab
