Cho hàm số 3 biến. Hỏi có bao nhiêu đạo hàm riêng cấp 3

If 20% of a number is 35, what is 50% of that number?

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost