Maria is using the random number table shown to select students for her survey. She assigned each of the 300 students in the sch
ool a three-digit number starting with 001. Beginning on Line 13, what is the third student number chosen for the sample?
A. 020
B. 171
C. 529
D. 639
A. 020
B. 171
C. 529
D. 639
1 answer:
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I'm assuming all of (x^2+9) is in the denominator. If that assumption is correct, then,
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There are many ways to do this. The idea is that when we have f( g(x) ), we basically replace every x in f(x) with g(x)
So in the first example above, we would have
In that third step, g(x) was replaced with x^2+9 since g(x) = x^2+9.
Similar steps will happen with the second example as well (when g(x) = x^2)