Here is a system of equations.
y=x+3
y=-x-5
graph the system. then write its solution. note that you can also answer "no solution" or "infinitely many" solutions.
x
5
?
solution:
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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?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

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