Answer:
y=12
Step-by-step explanation: what you would do is subtract 8 from 20 and you would get 12. You wouldn't have to do anything else due to the fact that the y is now alone
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Answer:
The maximum profit is reached with 4 deluxe units and 6 economy units.
Step-by-step explanation:
This is a linear programming problem.
We have to optimize a function (maximize profits). This function is given by:

being D: number of deluxe units, and E: number of economy units.
The restrictions are:
- Assembly hours: 
- Paint hours: 
Also, both quantities have to be positive:

We can solve graphically, but we can evaluate the points (D,E) where 2 or more restrictions are saturated (we know that one of this points we will have the maximum profit)

The maximum profit is reached with 4 deluxe units and 6 economy units.
Answer:
16
Step-by-step explanation:
The number (variable n) would be 7. work is in the pic