Short Answer 
The solution involves substituting x=5 into the equation, simplifying it step-by-step, and calculating the final result. After performing the operations, the final value of y is determined to be 2.
Step 1: Substitute the Value
Begin by substituting the given value of x into the formula. In this case, we will replace x with 5. This results in the equation:
- y = 0.8(5) 4 + 0.8 + 0.2 – 5(0.8)
Step 2: Simplify the Equation
Next, simplify the equation by performing the calculations sequentially. Start with each term and combine them step-by-step:
- Calculate 0.8(5) = 4.
- Then, apply these values into the equation y = 4 + 0.8 + 0.2 – 4.
Step 3: Calculate the Final Result
Finally, finalize the computation to find the value of y. Add and subtract sequentially to arrive at the solution:
- Combine the terms: 4 + 0.8 + 0.2 – 4 = 2.
- Thus, the final result is y = 2.