A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test. Each adult bike requires 6 hours to build and 4 hours to test. With the number of workers, the company is able to have up to 120 hours of building time and 100 hours of testing time for a
week of crepresents child bikes and a represents adult bikes, determine which system of inequality best explains whether the company can build 10 child
bikes and 12 adult bikes in the week.