Respuesta :

bowlingangela01

Answer:

The answer is:54

Step-by-step explanation:

U first multiply 3*4 then u multiply  3*5 then add them together then multiply them by 2


macemckim

Answer:

54

Step-by-step explanation:

substitute 4 for b and 5 for c and you will get ( 3(4) + 3(5) ) 2.......3 times 4 is 12 and 3 times 5 is 15 and 12 + 15 is 27 and 27 times 2 is 54