Answer: 
Step-by-step explanation:
The Explicit formula in function notation for a geometric series is:

Where
is the nth term of the sequence,
is the first term in the sequence and
is the common ratio.
Given the following geometric serie:

The common ratio is:

And the first term is:

Therefore, substituting values, we get that the Explicit formula that represents this geometric series is:

y=3x+5
plug your coordinate points into the equation for slope (left corner or the paper)
multiply by the denominator on both sides of the equation
x-6 cancels out and leaves y-23=3(x-6)
multiply x and -6 by 3
add 23 to both sides to isolate y
hope this helps!
Answer:
$
Step-by-step explanation:
Use the compound-interest formula:

Where:
FV=Future value or the ending amount
PV=Present value or the initial amount=750
n=Number of compoundings in any one year=2
t=Total number of years=4
r=interest rate=0.0425
Now, replacing the data in the equation:
$
The formula to calculate the sample size is:
n = Z number * standard deviation/ confidence estimate)^2
The z number for 95% confidence is 1.96
The standard deviation is given as 26 minutes.
The confidence estimate is given as 5 minutes.
The sample size is: (1.96 * 26/5)^2 = 103.87 = 104 shoppers.
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