Answer:

Step-by-step explanation:
Given



Required
Find x
First, we calculate the amount paid in terms of the cost price.
This is calculated using:



Express as decimal

Open bracket

So, we have:
and
---- given
Equate both

Collect like terms



Solve for x


Answer:
The answer is 7 video games
Step-by-step explanation:
He has a total of 40
$40-$5-$15=$20
he has a total of $20 left
mark brainliest
Answer:

Step-by-step explanation:
Compound interest:
The compound interest formula is given by:

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.
$12000 cash
This means that 
Compounded at 4% interest annually.
This means that 
What equation will calculate the value in x years?




Answer:
Mmmm let me think.mmmm oh a coW Moo