Which product is negative?
−4⋅(−6)⋅(−3)⋅(−5)
−7⋅(−3)⋅(−9)⋅0
−3⋅5⋅(−6)⋅4
−3⋅4⋅(−2)⋅(−7)

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?

Use sigma notation to represent the following series for 9 terms.

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table