Answer:
Third option is the right choice.
Step-by-step explanation:
Manipulate the right hand side.

Best Regards!
Answer: 25 books. you can buy 25 books with 5 dollars
Step-by-step explanation:
Answer:
7.591 x 10^10
Step-by-step explanation:
You have to move the decimal point over until you have a number under 10 and also the number of times you had to move the decimal point at the end of the number over is your exponent for 10
Answer:
1.92636657×10^-3
Step-by-step explanation:
This question looks quite awful coz it might be (16+81)^3/4 rather than being (16/81)^3/4....But, if it is (16/81)^3/4 the answer is 1.92636657×10^-3
hope you find it helpful....Thanks very much...
the second one, and the third one