PLEASE HELP ASAP I'LL MARK THE BRAINLYEST

Answer:
Part A) 0.4
Part B) 12.79
Step-by-step explanation:
Answer:
A. $0.40
B. $12.79
Step-by-step explanation:
we know glue cost $2.39 and Tape cost $1.99 so if we want to know how much more the glue cost compared to tape we substract the price of glue form price of tape.
$2.39 - $1.99 = 0.40$
if we want to know how much 2 pack of markers and 1 pack of construction paper cost, we add it all together.
$4.50+$4.50+$3.79 = $12.79