The person will make $588 for 42 hours. 
Step-by-step explanation:
Given, 
Per hour pay = $12.00
Twice pay = 12.00*2 = $24.00
Total time = 42 hours 
According to given statement; 
For the first 35 hours, they pay will be $12.00 and more than that $24.00 
42 hours can also be written as; 
42 hours = 35 hours + 7 hours 
Pay for 35 hours = 
Pay for additional 7 hours = 
Total pay for 42 hours = Pay for 35 hours + Pay for 7 hours 
Total pay for 42 hours = 420+168 = $588
The person will make $588 for 42 hours. 
Keywords: addition, multiplication
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