Meg has a total total of d dollars in her checking account. she makes a cash deposit of c dollars and a deposit of three checks each worth s dollars. she would like e dollars in cash from this transaction. she has enough money in her account to cover the cash received. express her new checking account balance after the transaction as an algebraic expression.

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.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

What is the result of adding the system of equations? 2x+y=4 3x-y=6