## Basic College Mathematics (9th Edition)

The missing values (a negative value means a loss) in the table (from top to bottom) are: \begin{array}{ccccccccc} &-\$700 \\&-\$100 \\&\$700 \\&\$900 \\&\$0 \\&\$700 \end{array}
The profit or a loss for each month can found by subtracting the expenses from the income. However, since the expenses in the table are represented by negative numbers. then to find the profit or loss, the expense will be added to the income. Thus, the profit or loss (a negative value means a loss) for each month is: \begin{array}{ccccccccc} &\text{January:} &\$2400 + (-\$3100) = &-\$700 \\&\text{February:} &\$1900 + (-\$2000) = &-\$100 \\&\text{March:} &\$2500 + (-\$1800) = &\$700 \\&\text{April:} &\$2300 + (-\$1400) = &\$900 \\&\text{May:} &\$1600 + (-\$1600) = &\$0 \\&\text{June:} &\$1900 + (-\$1200) = &\$700 \end{array} Thus, the missing values in the table (from top to bottom) are: \begin{array}{ccccccccc} &-\$700 \\&-\$100 \\&\$700 \\&\$900 \\&\$0 \\&\$700 \end{array}