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.) 10 hours 11 hours 12 hour

The total amount that Chang will received from his wages is the product of his hourly wage times the number of hours he has worked (n). His total savings should not be less than $125. The equation that best describes the situation is, 
                                    45 + 7n ≥ 125
Solving for n in the inequality gives an answer of n≥11.42 hours. Thus, he needs to work for at least 12 hours.

Jim has run 5/6 of a mile so far. i hope that answers your question! good luck : )