Answer:
a) -19/2
Step-by-step explanation:
3(x+6)+6x+9=7x+8
3x + 18 + 6x + 9 = 7x + 8
3x + 6x - 7x = 8 - 18 - 9
2x = -19
2x/2 = -19/2
Therefore, x = -19/2
D or 4
3x3.1415 is ~9.42
sq. rt. of 10 is ~3.16 so order them.
3.16 3.25 9.42 or 10, 3.25, 3pi
Answer: 3 is -4
Surface area = 804m^2
