Reading a Number

Q. The monthly income of a cell phone company is ${10}^7$ dollars. Which of the following gives the equivalent value?

1. 17 raised to the 7th power
2. 10 raised to the 10th power
3. 10 raised to the 17th power
4. 10 raised to the 7th power

Q. Jonathan's annual income is ${10}^6$ dollars. Which of the following gives his income?

1. 10 raised to the 6th power
2. 6 raised to the 10th power
3. 6 raised to 16th power
4. 16 raised to 10th power

Q. The prize of a book is 10 dollars. If there are 10 stacks of 10 such books, which of the following gives the total price of the books?

1. 10 raised to the 10th power
2. 10 raised to the 3rd power
3. 3 raised to the 10th power
4. 100 raised to the 10th power