easy · GMAT Quant
The efficiency rating E of a solar panel is defined by E(x) = |2x - 10| + 5, where x is the exposure time in hours.
If the panel is tested for an exposure time x such that 2 ≤ x ≤ 8 and x is an integer, what is the greatest possible value of E(x)?
- 6
- 15
- 11
- 21
- 5
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