To go on the class trip, chang needs at least $125. he has saved $45, and he makes $7 an hour at his job. what is the minimum number of complete hours he must work to have enough money to go on the trip? (assume there are no withholdings from his check.)

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =