Answer:
C
Step-by-step explanation:
The length is 17 and x=5
13 times 3x+2 = 221 so solve by dividing 221 by 13= 17.
Now we know that 3x+2= 17 so 3x= 15
x=5
Hello!
Throughout this problem, we will add or subtract values from our original balance.
In your checkbook, there was 298.72 dollars, and then you deposited 425.69 dollars. The function you would do is addition.
$298.72 + 425.69 = $724.41
If you wrote a check, then the amount you wrote is removed from your checkbook.
$724.41 - $29.72 - $135.47- $208.28 = $350.94
Then, the bank deducted 5 dollars from your account.
$350.94 - $5.00 = $345.94
This leaves you with $345.94 at the end of the week.
Therefore, your answer is choice C, $345.94.
Answer:
See below
Step-by-step explanation:

If we know that 30% of the time is used after 9 minutes we can write this mathematically as:

By solving for x we can determine the total time allowed to play games and so:

The total time allowed to play games is 30 minutes. Since 9 minutes have lapsed 30-9=21 minutes left to play.