Final answer:
Jerry will save $120 if he buys the deal offer.
Step-by-step explanation:
To find out how much money Jerry will save if he buys the deal offer, we need to compare the cost of buying each item separately to the cost of the deal offer.
Buying 2 pairs of socks would cost $30 x 2 = $60.
Buying 2 pairs of boots would cost $70 x 2 = $140.
Therefore, if Jerry buys the deal offer for $80, he would save $60 + $140 - $80 is $120.