A bookstore costs $96 a day to keep open, and it spends $12 for each book that it sells. If each book sells for $18, what is the
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The error is in STEP 3.
In any type of inequality one is not allowed to transpose(multiply or divide) any negative number. We can only divide it by positive numbers. if we multiply it by a negative real number the inequality reverses.
for example:
In any type of inequality one is not allowed to transpose(multiply or divide) any negative number. We can only divide it by positive numbers. if we multiply it by a negative real number the inequality reverses.
for example: