f(2.5) means x is equal to 2.5.
Replace x in the equation with 2.5 and solve:
6(2.5) + 1.5 = 15 + 1.5 = 16.5
f(2.5) = 16.5
Answer:
16.5
Step-by-step explanation:
ANS;;;; 45 ...........................
I believe the answer is D.