Answer:
B) 17 games.
Step-by-step explanation:
Let <em>g</em> represent the number of games Mark played.
Since there is a $5 entrance fee and each game costs an additional $1.25, we can write the expression:
Which represents that total cost after <em>g</em> games.
Since we know that Mark spent a total of $26.25:
Solve for <em>g.</em> Subtract five from both sides:
And divide both sides by 1.25. Hence:
So, Mark played a total of 17 games.
Our answer is B.
Answer: The level of the dose be after 3 hours= 0.03125 mg.
Step-by-step explanation:
General exponential decay equation : , where A = initial value , r= rate of decay , x =Time period.
Here, drug’s effectiveness is decreasing exponentially.
AS per given , we have
A= 250 mg
x=3
r= 95% = 0.95
Then,
Hence, the level of the dose be after 3 hours = 0.03125 mg.
Answer:
Step-by-step explanation:
Given equation:
Solutions: -9 and 9
To solve for
Solution:
The solutions of the equation means and
We will plugin the solutions in the equation and solve for
1) when
Subtracting both sides by 81.
∴
2) when
Subtracting both sides by 81.
∴
So, for both solutions we get