You earn a fixed salary working as a sales clerk making $11 per hour. you get a weekly bonus of $100. your expenses are $60 per week for groceries and $200 per week for rent and utilities. how many hours do you have to work in order to break even? show all steps, and explain.

Shall we make life simpler by eliminating unnecessary numbers. 
Totally, my expenses would be 60+200 = $260. Let us say that of this $100 would be met by the weekly bonus so that the residual part of the requirement is $160. 
Let x be the number of hours I work. Then my earning would be 11x. For break even, earning should equal requirement. That is 11x = 160. And so, x = 160/11 = 14.55 hours/week 

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425