HELP ASAP
Which expression is represented by the diagram?

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.

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.

What integer is equivalent to 9 3/2