294 gallons of oil is the answer because you do 42 and mltiply it by 7
Answer: 199.5
Step-by-step explanation: 9.5 x 10.5 hours x 2 weeks
It's difficult to make out, but I think the task is to expand

Write the number in polar form first:

By DeMoivre's theorem, you have

and converting back to Cartesian form, this number is equivalent to