Y = 4x-160 is your simplified answer to this question.
1) 2x(x+3)
2) 3xy^2(9-4y)
3) 5xy(x^2+2y)
4) 8ab(2a+3b)
5) 4ac^3(3b^2+4c)
Surface = 2 x PI x r x H + 2 x PI x r^2
= 2 x r x h + 2 x r^2
= 2 x 6 x 12 + 2 x 6^2
= 144 + 72
= 216 PI in^2
Answer is A
3m-10=2(4m-5)
3m-10=8m-10
3m-8m=-10+10
-5m=0
m=0