Ineed ! ~brainliest to you~ hurry up

B

Explanation:

           rate    x    time

Chris:   40     x       t      = 40t

Amy:    60     x     t - 2   = 60(t - 2)

Use the distance formula:

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B

Explanation:

  x² - 8x + 19

a=1  b=-8  c=19

Use the Quadratic formula to find the solutions for x:

     = 4 ± i√3

Solutions are:                  Factors are:

x = 4 + i√3                       x - (4 + i√3) = 0

x = 4 - i√3                       x - (4 - i√3) = 0

answer; i believe the answer is 4*c.