2. The cost of having a window fixed is $100 plus $20 per hour of labor. Using h for the number of hours of labor, write an expr
1 answer:
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Answer:
The margin of error will be "0.65". A further explanation is provided below.
Step-by-step explanation:
The given values are:
n = 343
x = 110
At 99% confidence level,
%
then,
or,
Now,
The point estimate will be:
⇒
⇒
⇒
or,
⇒
⇒
The margin of error will be:
⇒
On substituting the above values, we get
⇒
⇒
⇒
hence,
⇒
⇒
⇒
Answer:
$17,685.45
Step-by-step explanation:
We will use the compound interest formula to solve this:
<em>P = initial balance</em>
<em>r = interest rate (decimal)</em>
<em>n = number of times compounded annually</em>
<em>t = time</em>
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The first step is to change 12% into a decimal:
12% -> -> 0.12
Next, lets plug in the values:
After 7 years, you will have $17,685.45