The piece wise function models the cost of x pounds of trout will be 28x + 4, 0 < x < 10 and 22x + 8, x ≥ 10.Option A is correct.
What is a function?
A connection between independent variables and the dependent variable.is defined by the function.
Given data;
Trout costs for each pound are, $28,
Shipping charges,$4
x is the number of orders
Given condition;
Karen orders 10 or more pounds, the trout costs only $22 per pound, but the shipping fee is $8.
Functions help to represent graphs and equations. A function is represented by two variables one is dependent and another one is an independent function.
The total amount is found as;
⇒No of orders × price of trout per pound + shipping charge per order
⇒28x + 4,
For condition 2 the total value is represented as;
⇒No of orders × price of trout per pound + shipping charge per order
⇒ 22x + 8
The piece wise function models the cost of x pounds of trout will be 28x + 4, 0 < x < 10 and  22x + 8, x ≥ 10.
Hence, option A is correct.
To learn more about the function refer to the link https://brainly.com/question/12431044.
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