Drag each amount to the correct location on the expression. Last month, the daily balance in Joana's credit card account was $1,000 for 9 days. $750 for 10 days. $850 for 4 days, and $900 for 7 days.
Complete the expression to find Joana's average daily balance.
750
1,000
900
30
850
90
)+10(
)+4(
)+7(
)
( )