Respuesta :

Work out the parentheses first:-
3 + 4(7)
Now the multiplication
= 3 + 28
=  31 answer
Yøu
Hey!

To solve this, to the parenthesis first.

3 + 4(16 - 9) --> 3 + 4 * 7.

To the multiplication next..

3 + 4 * 7 ---> 3 + 28.

Do the addition. 

3 + 28 ---> 31.

Your answer is A.

Hope this helps!!