Functions are used to represent tables and equations
- The function that represents the number of imports is f(x) = 2x
- The function that represents the number of exports is f(x) = 2 + x
<h3>How to determine the import function</h3>
From the table, we can see that the values of the import is twice the number of months
This is represented as:
y = 2x
Rewrite as a function
f(x) = 2x
Hence, the function that represents the number of imports is f(x) = 2x
<h3>How to determine the export function</h3>
From the table, we can see that the values of the export is two more than the number of months
This is represented as:
y = 2 + x
Rewrite as a function
f(x) = 2 + x
Hence, the function that represents the number of exports is f(x) = 2 + x
Read more about linear functions at:
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The absolute and relative cost difference in the restaurant and copycat meal are :
- Copycat meal is $4.20 less than restaurant meal
- Restaurant meal cost 1.88 times as much as copycat meal
- Copycat meal is 53% of the cost of restaurant meal
Cost of restaurant meal = $8.95
Cost of copycat version = $4.75
1.)
Difference in cost of meal for both version :
Cost of restaurant meal - Cost of copycat version
($8.95 - $4.75) = $4.20.
The copycat meal is $4.20 less than the restaurant meal
2.)
Cost of restaurant meal ÷ Cost of copycat version
($8.95 ÷ $4.75) = 1.884 = 1.88(2 decimal places)
The restaurant meal cost 1.88 times as much as the copycat meal
3.)
Percentage = (8.95 - 4.75) × 100% = 53.07% = 53%(nearest whole number)
The copycat meal is 53% of the cost of restaurant meal
Therefore, the relative and absolute cost difference are $4.20, 1.88 times and 53%
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