The temperature in Pelham at 7 am was 21° F. Over the next 4 hours, the temperature decrease by 1.3° each hour.
What was the temperature in Pelham after 4 hours?

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.