Mariel wrote these checks from her checking account: $10, $10, $31, and $10. Which number shows the change of balance in her checking account? A. -$61
B. -$1
C. $1
D. $61

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?