Find the range of each function for the given domain.

1. f(x) = -2x + 1; {-6, -2, 0}
2. f(x) = x3 + 1; {-2, -1, 3}

1 answer

1.) f(x) = -2x + 1; {-6, -2, 0}
-2(-6) + 1 = 13
-2(-2) + 1 = 5
-2(0) + 1 = 1
range: {13, 5, 1}

2.) f(x) = x^3 + 1; {-2, -1 3}
-2^3 + 1 = -7
-1^3 + 1 = 0
3^3 + 1 = 28
range: {-7, 0, 28}
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