ANSWER
The correct answer is B

EXPLANATION
The given exponential expression is

We can rewrite this as,

We need to simplify to obtain a positive index, so we apply the following property,

This implies that,

This will finally simplify to,

Therefore the correct answer is B
The should be 158 ways, because 9*8+8*7+6*5=158.
Answer 2. You just have to find wants similar and put it out front and then leave wants left in parentheses
It’s either 40 or 5 games because it says that each team will play every other team once
First, you would create an equation for this problem.

=

Next, you would cross multiply.
15x = 1,800
Now, you would isolate the x. To do this, you would divide both sides by 15.
x =
120It is a 120% increase. I hope this helps!