3 years ago

Find an explicit formula for the arithmetic sequence -5,13,31,49,...

Mathematics

1 answer:

nadezda [96]3 years ago

6 0

Step-by-step explanation:

b(n) = b(1) + (n-1) d, where d is the difference,

d = 13-(-5) = 18

b(n) = (-5) + (n-1)(18)

= -5 +18n -18

b(n) = 18n -23

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