Answer:
See below.
Step-by-step explanation:
So we know that a gym membership costs $25 plus $14 each month.
In other words, the one-time cost is $25 and there will be a cost of $14 each month.
We can write this as:
Where f(x) equals the total cost given the number of months x.
For 6 months, the total cost will be:
Answer:
Step-by-step explanation:
We know that the sample size was:
The average was:
The standard deviation was:
The confidence level is
The confidence interval for the mean is:
Looking at the normal table we have to
Therefore the confidence interval for the mean is:
This means that <em>the mean planned spending of all Americans who take long summer vacations in 2009 is between $ 1024.69 and $ 1127.31</em>
Answer:
B
Step-by-step explanation:
We are given that Expression One is:
And Expression Two is:
We are given that the value of Expression Two is 20,000 times greater than the value of Expression One. And we want to find the value of <em>y.</em> In other words:
We can divide both sides by four:
Recall that:
Therefore:
Divide both sides by 10ˣ:
Solve for <em>y: </em>
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Our answer is B.