Answer:
Step-by-step explanation:
Amount at hand = $62
Amount owed = $13 + $39
= $52
$62 - $52
= $10
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:

2x + 3/12 = 2x/8
2x - 2x/8 = -3/12
2x - x/4 = -3/12; 2 - 1/4 = 1 3/4 = 7/4
7x/4 = -3/12
7x = -3/12 * 4
7x = -1
x = -1/7