It is difficult to do find the exact answer from the photo. f(3) looks like it hits the point 3, so a = 3. Therefore 3a = 9 So f(3a) = f(9) And f(9) looks like it hits the point 7ish. So my guess would be 7.5 (C)
The answer is: [C]: " 7.5 " . ________________________________________________ The value of: " f(3a) " = " 7.5 " . ________________________________________________ Explanation: ________________________________________________ y = f(3) = the value of "y" when "x = 3" = 3.5 (based upon inspection of the graph provided in the "image attached).
f(3) = a = 3.5 ; ________________________________________________ The question asks: "What is the value of: " f(3a) " ? ________________________________________________ → (3a) = (3)*(3.5) = 10.5 .
→ f(3a) = f(10.5) = y = the value of "y" when "x = 10.5" ;
= 7.5 (based on visual inspection of the graph in the "image attached") ;
→ which is: Answer choice: [C]: " 7.5 " . _____________________________________________________
