Solve questions using table.

Question

Time in minutes N| 2  | 4 | 6

Feet, f(n)             |-4 |-6 |-12

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Write an explicit rule for the sequences.

 

Find the feet after 15 minutes.

Answer 1

-3 - 3^((n-2)/2)

 

n=2: -3 - 3^0 =-3 -1 = -4

n=4: -3 - 3^((4-2)/2) = -3 -3=-6

n=6: -3 - 3^((6-2)/2) = -3 - 9=-12

 

n=15:  -3 - 3^((15-2)/2) = -3 - 1263 = -1266