tonebeeze wrote:Please see problem attached.
OA = D
Can someone please show me their work. Thanks!
Let @x = the function.
@x = x+1.
Plug in x = 10.
(@x)² - @(x²)
= (@10)² - @100
= (10+1)² - (100+1)
= 121 - 101
= 20. This is our target.
Now we plug x = 10 into all the answers to see which yields our target of 20.
Only answer choice D works:
2x = 2*10 = 20.
The correct answer is
D.
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