2x + y - 6 = 0
given 2x + y = 6 ( subtract 6 from both sides )
2x + y - 6 = 0 ← in general form
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f(x)=2^(x-2) = 2^(-4) = 1/2^4 = 1/16
answer
</span><span>A.
f(x)=2^(x-2)</span>
The estimated sum of 196 and 482 is 700.
We do estimates when we do mental calculation. We relate the number to the nearest number that can easily be computed mentally.
196 is near 200 so we round it up to 200
482 is near 500 so we round it up to 500
Thus, 200 + 500 = 700.
700 is the estimated sum.
Start without thinking of the options. You could do process of elimination, and that's fine, but to learn this kind of problem it's better to think it all the way through. The problem says you have 112 books, and an indefinite number shelves, s, that each hold sixteen books. You need to fit 112 books into shelves, each with sixteen books. That comes down to 112÷s=16, which is the same as 16s=112.