Arepair technician replaces cracked screens on phones. he can replace 5 screens in 3 hours. write an equation you can use to determine how long it takes to replace any number of screens.

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?

Select the quadratic that has root x = 8 and x = -5

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39