ALGEBRA

bean plants grow rapidly. a bean plant is 16 inches tall. Tomorrow it will be 24 inches tall, the next day it will be 32 inches tall and on the next day it will be 40 inches tall. Write a rule to represent the heights of the bean plant as an arithmetic sequence. how tall will the plant be in 12 days?

A(n) = 16+(n-1)8;104 inches ****
A(n) = 16+(n-1)8;116 inches
A(n) = 16n; 192 inches
A(n) = 12n; 144 inches


I am guessing. Can you explain how the answer is a?

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asked by BUBBLES
  1. day1 = term1 = 16
    day2 = term2 = 24 , an increase of 8
    day3 = term3 = 32 , an increase of 8

    looks like an arithmetic sequence where
    a = 16, d = 8

    so on day 12
    we have term12
    = a + 11d
    = 16+11(8) = 104

    somebody better call Jack

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    posted by Reiny
  2. Got it thanks!

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    posted by BUBBLES
  3. So A ?

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    posted by Chris O
  4. Yes,Chris.

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    posted by Reiny

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