help please anyone good in calculus and please explain step by step it would be really great
|dw:1388976733855:dw|
C = cost of wall How much total wall length costs $125/ft, and how much wall length costs $80/ft?
In order to solve a maximization or minimization problem, you need to write an expression for the quantity you need to maximize or minimize in terms of one variable.
For now, let's use the variables x and y as they are shown in the figure above.
Form the figure above, using x and y, can you tell how much length of outside wall is needed?
How much does the left side measure? |dw:1388977400183:dw|
If you want help, answer my questions. Look at the last figure, just above. What is the length of the left side?
Great. The right side is another side the same size. That's another y. |dw:1388977725262:dw|
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