1.27 = 1 27/100
I hope this helps!
For this case we have the following equation:
an = a1 + (n - 1) • d
Where,
a1 = 57
d = 66-57 = 9
For the term number 250 we have:
n = 250
Substituting the values:
a250 = 57 + (250 - 1) * 9
a250 = 2298
Answer:
D.2298
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4140
21-2(180)=3420 3420/21=162.8571 etc. 360-162.9=197.1 197.1 times 21 is (4140)