What is the slope of the line

For what value of x does 4x = (1/8) x + 5?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

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.