If you will be required to purchase textbooks, determine what their average cost will be.

如果要求买教科书的话，那你要计算一下平均花费是多少。

youdao

This car cost me $4, 000, I had worked full-time for the remainder of my freshman year (while maintaining a 4.0 grade point average ) in order to purchase this car and afford my very pricey insurance…

这辆车花了我4,000美元，为了买这辆车并能付得起对我来说高价的保险费，我一直在大一的剩余时间里做全职工作（同时保持4分年级平均成绩）。

youdao

That means for the average household in GB or Pittsburgh to purchase two seats in the nosebleeds will cost them well over 10% of their annual income.

FORBES: The Super Bowl Economy