Melinda has shown that a function, f(x), increases by 4 for every unit in the domain. what does this prove? the function f(x) is an arithmetic sequence. the function f(x) is a geometric sequence. the function f(x) is not a sequence. this does not prove anything.

-The function f(x) is an arithmetic sequence.

Explanation:-

Let be the initial value

According to the question

 and so on

Thus, we can write a formula for the term n of an arithmetic sequence in the form:

where, n=1,2,3,4,....

4= common difference

Therefore, the function f(x) is an arithmetic sequence.

false

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< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

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