Plug in n = 1 into the nth term formula
a(n) = 4n-1
a(1) = 4*1-1
a(1) = 3
So the first term is 3
The second term will be 7 because we add on 4 each time, as indicated by the slope of 4. This is also known as the common difference.
So the nth term is found by adding 4 to the (n-1)st term, in other words,
a(n) = a(n-1)+4
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In summary, the answer is
a1=3; an=an-1+4
which is choice B
Answer:
Step-by-step explanation:
The given expression is
We need to find the simplified form of the given expression.
It can be rewritten as
Combine integers and fractions separately.
Taking LCM we get
In can be written as
Therefore, the expression is equivalent to the given expression.
The percentage would be 51% but if you want to round it the answer is 50%