Pieter wrote and solved an equation that models the number of hours it takes to dig a well to a level of 72 feet below sea level. 7h – 5(3h – 8) = –72
which statement is true about pieter’s solution?
1. it cannot be a fraction or decimal because the depth of the well is a whole number.
2.it must be a positive number since it represents a number of hours.
3. it must be a negative number because the depth is below sea level.
4.it cannot be greater than –72 because that is the depth of the well.