Evaluate each expression. determine if the final simplified form of the expression is positive or negative.
1. -4^2 positive or negative?
2. (-4)^2 positive or negative?
3. 4^2 positive or negative?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

How do you find principle and simple interest

Mr. vector door is buying two new cowboy hats all together the hats cost $75.12 the second heart cost twice as much as the first hat what is the price of the more expensive at round to the nearest hundredth