help please !!

Multiple Choice (1 point each)
1. What is the simplified form of the expression –(10)–1? Hint: Think of the problem as a fraction, , and switch the position of any terms containing negative exponents.
•
•
• 10
2. Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours? Hint: How many times does it double in 12 hours if it doubles every 4 hours?
• 720 pounds
• 360 pounds
• 1,440 pounds

Question

help please !!

Multiple Choice (1 point each)
1.	What is the simplified form of the expression –(10)–1?  Hint:  Think of the problem as a fraction,  , and switch the position of any terms containing negative exponents. 
•	  
•	  
•	 10
2.	Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours?  Hint:  How many times does it double in 12 hours if it doubles every 4 hours?
•	 720 pounds 
•	 360 pounds 
•	 1,440 pounds

anonymous · Answer

Do you have an assigned book for this question?

anonymous · Answer

Possible answers for number 1.
A. -1/-10
B.1/10
C. 10

anonymous · Answer

no

anonymous · Answer

So if you don't have an assigned book, how are you supposed to learn this?

anonymous · Answer

it is a unit pre test