Answer:
The price of a game is 
Step-by-step explanation:
Let
x ----> the list price of a game
Remember that

To find out the price of a game that's been discounted 18% off its list price, multiply the list price by the number 0.82
so

It would b 9 x (-3^(x-1))
Answer:
1 1/5 or 12/10
Step-by-step explanation:
310+910=?
The two fractions have like denominators so you can add the numerators.
Then:
3+910=1210
This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 12 and 10 using
GCF(12,10) = 2
12÷210÷2=65
The fraction
65
is the same as
6÷5
Convert to a mixed number using
long division for 6 ÷ 5 = 1R1, so
65=115
Therefore:
310+910=1 1/5
Hope this Helps!