Answer:
1.f 2.a 3.j 4.e
Step-by-step explanation:
you add and subtract the needed like terms
for example you can add 3x with 4x but not with 4x² because it's a different degree
s is the length and w is width which the equation is 2s+2w=P
d=4.5
d+5.5=10
d=10-5.5
Hope this is helpful