Juan is purchasing beverages for a family reunion each case of water costs 3.75 and each case or lemonade costs $6.49 he has a total of $80 that he can spend write an inequality to represent the number of water and lemonade he can purchase

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?

Answer this question, only if you know the answer. 30 points and brainliest!

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer