Answer:
Step-by-step explanation:
5p + 2(p + 4) .......because pencil cases (p) sell for 5 bucks a piece....and mechanical pencils (p + 4), sell for 2 bucks a piece. She is basically selling 4 more mechanical pencils then she is pencil cases.
i think the original price is 60
25% of 60 is $45.
does it say like x=_
$99
100 - (100 x .10) = 90
90 + (90 x .10) = 99