You have to measure the circle first
Answer: Choice D
9, 30, 93, 282, 849
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Explanation:
The notation
tells us that the first term is 9
The notation
says that we multiply the (n-1)st term by 3, then add on 3 to get the nth term 
So if we wanted the second term for instance, then we'd say

If we want the third term, then,

and so on.
The terms so far are: 9, 30, 93
You should find the fourth and fifth terms are 282 and 849 respectively if you keep this pattern going.
Therefore, the answer is choice D
You would draw a solid dot on -5 and draw the line on the right with the arrow at the end ----------> .... like that
x is the number of adults and y is the number of children.
x + y = 12
<span>14x + 10y = 140
lets multiply the first equation by -10 and then add it to the second equation:
-10x - 10y = -120
</span>14x + 10y = <span>140
</span>-----------------------
4x + 0 = 20
x = 20/4
x = 5
then substitute in the original equation:
x + y = <span>12
</span>5 + y = <span>12
</span>y = 12 - 5
y = 7
therefore there were 5 adults and 7 children
No it means how many times can 18 go into 37 and if there is a remainder