The function f(x) = 6x + 1.5 represents a linear function where x is the input variable. To find f(2.5), we substitute 2.5 in place of x in the function.
1. Substitute x = 2.5 into the function f(x) = 6x + 1.5:
f(2.5) = 6(2.5) + 1.5
2. Calculate the value of f(2.5) by performing the multiplication and addition:
f(2.5) = 15 + 1.5
f(2.5) = 16.5
Therefore, the value of f(2.5) is 16.5.
So, the correct answer is:
O 16.5
