The value of f(a + 2) is 3(a + 7)
The function is given as:
f(x) = 3(x+5)
Next, we substitute a + 2 for x in the above equation
f(a + 2) = 3(a + 2 + 5)
Evaluate the like terms
f(a + 2) = 3(a + 7)
Hence, the value of f(a + 2) is 3(a + 7)
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