Answer:
A.P+C=O
A(2).P+C=$7.00
B.A (1) that expression doesnt give the amount for both sets of cookiea all together its just shown as a letter.A(2) its shows p+c as $7.00 showing thats how much for both sets of cookies instead of having a letter to represent the amount payed.
PS:hope this helped good luck !
Y=mx+b
m=slope
b=yintercept
given
slope=2/3=m
yintercept=9=b
y=2/3x+9
