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OpenStudy (anonymous):
If the function f is defined for all numbers x by f(x)=2x-7, the what is the value of f(-2)? A.-11 B.-9 C.-5 D.-3
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OpenStudy (campbell_st):
well its a simpl case of substitution \[f(-2) = 2 \times (-2) - 7\] just calculate the answer
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