What variable are you solving for ?
So he bought the $120 game with $82 and 2 equally priced game. This can be changed to an equation: 120= 82+2X. The X represents the cost of the used game.
120= 82+2X
-82 -82
——————-
38= 2X
38= 2X
Divide by 2 on both sides
X= 19
We can write any number n in the form
, since
and
are inverse functions, so that

The bases are the same on both sides, so the exponents must be equal.

Solve for x :


Answer:
4
Step-by-step explanation: