What does 6828377728 x 299283829 equal

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

The graph of f(x), shown below, resembles the graph of g(x) = x2, but it has been changed somewhat. which of the following could be the equation of f(x)?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.