Answer:
C

Co efficient means the number or value beside preventing the variable from standing alone
Pretty sure it would be 5x u less theres more to the problem
Answer:
22x+27
Step-by-step explanation:
Let's simplify step-by-step.
9(2x+3)+4x
Distribute:
=(9)(2x)+(9)(3)+4x
=18x+27+4x
Combine Like Terms:
=18x+27+4x
=(18x+4x)+(27)
=22x+27
Hi,
A)

B)
Only if n=4*k or n=4*k+1 , k beeing an integer.