Answer: 6x+3y
Step-by-step explanation:
3x+3(x+y)= 3x+3x+3y=6x+3y
I believe it is A and D. All you have to do is add them all together and if both sides are the same then its a correct answer.
the answer is 10. 5 times 9 = 45 and it says 45 divided by 15 which is 3 and it says seven more than 9 divided by 15 so 10 bb :)
F (9)= 5(9) -16
45-16
f(9)=29
