Davit drives 16.5 miles in 10 minutes. He passes a sign which gives the speed limit as 65 mph.
By how much, in mph, did Davit's average speed exceed the speed limit?

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)

the solution, from the graphing of the two lines, is (3,2), i.e., x = 3, y = 2.