Adison earned $25 mowing her neighbor''s lawn. Then she loaned her friend $18, and got $50 from her grandmother for her birthday
1 answer:
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For the given quadratic equation we only have a maximum at y = 18.
<h3>How to find the extrema of the given function?</h3>
Here we have:
Notice that this is a quadratic equation of negative leading coefficient.
Then we have a maximum at the vertex, and both arms tend to negative infinity as x tends to infinity or negative infinity.
The vertex is at:
x = -(-4)/(2*(-2)) = -1
The maximum is:
If you want to learn more about quadratic equations:
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Answer:
Step-by-step explanation:
Given the system of two equations:
Add these two equations (left side add to left side and right side add to right side):
Substitute into the first equation: