Write an equivalent expression for the following x + x + x + 2x + x
(x + 2) + (x + 2)
y + y + y + y + 10 + y + 1

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?