答案:A
解析:
If the function f is defined by f(x)= (2x) + 3, and f(a) = 11, then f(a) = (2a) + 3 = 11. Therefore, a = (11-3)/2 = 4.
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答案:A
解析:
If the function f is defined by f(x)= (2x) + 3, and f(a) = 11, then f(a) = (2a) + 3 = 11. Therefore, a = (11-3)/2 = 4.