The output y is 
Explanation:
The expression is 
We need to determine the output y, when the value of input is x is 5.
That is, substituting
in
, we get,

Multiplying the value within the bracket, we have,

Subtracting the terms, we get,

Thus, the value of output y is 
Solution: We are given:
Predicted Sales by Sameera 
Actual Sales by Sameera 
Now to find the Percent error, we have to use the below formula:



Therefore, the percent error is
To answer the question above, we are simply to subtract the length of the gold ribbon which is 2 4/6 ft from the length of the silver ribbon, 5 2/6 feet. Mathematically,
5 2/6 feet - 2 4/6 feet = 8/3 feet
Therefore, Gina has 8/3 feet more of the silver ribbon than the golden ribbon.
Answer:
£699 in London
£902.87 in Paris
£1505.63 in New York
The lowest price of the iPhone is £699 in London.