If the cost of the dinner was $62.92, and they are trying to leave a tip that is 15%, then we have to :
1) first write the math form of 15% (so we can use it to calculate the answer) and that is: 15/100 = 0.15
2) multiply the amount they spent for dinner by the number we got in the step above. This is because 15% of $62.92 can be translated in math terms as:
15% times 62.92 = 0.15 times 62.92 = 9.438
Therefore, the closest they can go to this numer is : $9.50