Asked by Lilly

-3, 12, -48, ... Write the explicit and recursive formulas for the geometric sequence. Use your explicit formula to calculate the 6th term in the sequence.

Answers

Answered by Reiny
looks like you are multiplying the current term by -4 to get the next term

Now translate "multiplying the current term by -4 to get the next term" into a recursive formula

for the explicit,
a = -3
r = -4
term(n) = a r^(n-1)
= -3(4)^(n-1)
term(6 ) = .....
Answered by R_scott
the common ratio is -4

An = -3 * (-4)^(n - 1)
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