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Step-by-step explanation:
when we get the common ratio that must be equal
r=6/2=18/6=54/18=3 equal
So it is geometric
By using this equation:
a(n)=a(1)*r^(n-1)
and we have a(1)=2 , r=3
Explicit rule: a(n)=2*(3)^(n-1)
hope this helps
Because every x value cannot have more than one y value so doing it will make sure it has only one value on the line.
128 x 5= 640 which is 100% 640/128= 20
640 x 20%= 128
7 + 4x - 10x + 15 = 22 - 6x
You just need to sum terms of polynomial with the same stage of x and not to mix them out. Note that terms without x are actually terms with x^0 because x^0 = 1
Therefore we sum 7 and 15 = 22 and
we sum 4x and -10x = -6x
Answer is B)
