A dealer bought an item for $20, sold it for $24, bought it for $25, and sold it for $28. How much profit did she make?
1 answer:
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Answer:
see below
Step-by-step explanation:
Oddly enough, it is the one that with f(x) <em>reflected over the y-axis</em>. All points on the graph are mirrored across that axis (x is changed to -x, y is left alone).
