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.

it should be a and d. lmk if i'm wrong xd

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.