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which system of equations is inconsistent?

a. 2x+8y=6 & 5x+20y=2

b. 5x+4y=-14 & 3x+6y=6

c. x+2y=3 & 4x+6y=5

d. 3x-2y=2 & 6x-4y=4

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

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Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?