Mr. Brown bought a television set and paid $110 as the first installment. If he increases each payment by $20 and pays a total of 6 installments, how much will the television set have cost him?

A.
$900

B.
$920

C.
$940

D.
$960

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.

i believe a. 12x≥120 is the answer

it would have to be 3/0