Answer:
the common difference is 5.4 and yes, this is an arithmetic sequence
Step-by-step explanation:
Each new term is derived by adding 5.4 to the previous term:
2.1 + 5.4 = 7.5,
7.5 + 5.4 = 12.9,
and so on,
so the common difference is 5.4 and yes, this is an arithmetic sequence.
Answer:
0
Step-by-step explanation:
f^-1(x) is a reflection on f(x)
So when f(4) = 0 so is f^-1(4) according to this function.
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The questioner wants us to list all possible roots by applying the Rational Roots theorem
factors of constant term (-20) = +/- 1, +/-2, +/-5, +/-10, +/-20 WE call these factors p.
factors of leading coefficient (2) = +/- 1, +/-2 (call these q)
then possible roots are p/q = +/-1/1, +/- 1/2 , +/- 5/1 , +/- 5/2 and so on.
