What is a unique benefit of using the Internet in healthcare?

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.

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!