For the first question, x = 4
The total amount Allen will need to pay for the video game is $48.96 as 49-0.1+0.06=48.96
Answer:
x=9
Step-by-step explanation:
Multiply both sides by 2.
x+3= 12
Subtract both sides by 3.
x=12-3
x=9
Answer: 
Step-by-step explanation:
For this exercise you need to remember the Power of a power property. This states that:

You know that the given expression
is used to determine points earned, and "n" represents the game level.
Therefore, knowing this, you can to substitute
into the expression
:

Finally, in order to simplify the expression for the
level, you must apply the Power of a power property mentioned before.
Therefore, you get:

B is the answer to this question