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1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas