If f(a)=6a+6, what is the value of (f(2a)+f(a)) ? Choose the correct choice from the following choices: A) 2a-4 B) 8a-7 C) 10a+12 D) 12a+12 E) 3a+5
f(a)=6a+6   f(2a)= 8a+6   (f(2a)+f(a)) = 8a+6+2a+6 = 10a+12   Answer is 10a+12
<result>C</result>
If f(a)=6a+6, what is the value of (f(2a)+f(a)) ?