Scotty had $2 on his meal card at college. He knew that he could overspend and pay the bill at a later times. He bought a candy bar for $1.50 and a bag of chips for $1.75.How much money does he owe the school

Scotty owes the school $1.25.

Step-by-step explanation:

First we add how much he spent:

$1.50 + $1.75 = $3.25

Now we subtract how much money he has on his card.

$3.25 -$ 2.00 = $1.25

72 is the answer to this problem

-3.5 degrees per hour

step-by-step explanation:

find the unit rate:

-12   1/4 degrees           12.25 degrees

= - = -3.5 degrees per hour

      3   1/2 hours               3.5 hours