(a) A car corporation produced 1120 more cars this month than last. Write a signed number to represent this month's change in production. (b) Felipe withdrew 80 dollars from his checking account. Write a signed number to represent this change in his account.

This month's increase in car production can be represented by the signed number +1120, indicating a positive change of 1120 cars. A signed number like this clearly highlights the gain in productivity over the previous month—just like a superhero leaping ahead in a race! For Felipe's situation, the withdrawal of 80 dollars from his checking account can be expressed as -80, which signifies a negative change in his balance. It's like watching money fly away as he makes a purchase—every dollar counts, and this number makes it clear that his account is moving in the wrong direction!