Answer:
f(4) = 31
f(0) = 7
f(-1) = 1
Explanation:
f(x) = 6x + 7
f(4) = 6(4) + 7
f(4) = 24 + 7
f(0) = 6(0) + 7
f(0) = 0 + 7
f(-1) = 6(-1) + 7
f(-1) = -6 + 7
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