Answer:
Minimum number of complete hours he has to work=12 hours
Explanation:
The total amount of money he needs can be expressed by the equation;
Total amount he needs=Amount saved+Amount he makes an hour.
Where;
Total amount he needs=$125
Amount saved=$45
Amount he makes an hour=$7×Number of hours(h)=7h
Substituting in the expression above;
125=45+7h
7h=(125-45)
7h/7=80/7
h=11.43 hours
Minimum number of hours he has to work=11.43 hours
Minimum number of complete hours he has to work=12 hours