It is $50 to join a club and then $15 per month. which expression below represents the monthly fee? a. 15m + 50 b. 65m c. 15 + 50m d. 3.3m

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

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?

Name the most appropriate metric unit for each measurement like the mass of cow