Consider the following linear system with a and b unknown non-zero constants. L1 - 322 + I3 = 4 2x1 - 8x3 = -2 -6x1 + 6x2 + ax3 = b (a) For what values of a and b does the system have infinitely many solutions?
(b) Given an example of a and b where the system has exactly one solution.
(c) Give an example of a and b for which the system has no solutions.

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?