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In a Geometric Sequence, each term is found by multiplying the previous term by a constant. For this case, the constant is 4. To find the sum of the geometric sequence with 8 terms, we use the formula as follows:

∑(ar^k) = a ( 1-r^n) / (1-r)

where a is the first term, r is the constant, n is the number of terms

 ∑(ar^k) = 4 ( 1-4^8) / (1-4)
∑(ar^k) = 87380

Answer:

65,535

Step-by-step explanation:

4 times 4 times 4 times...... count the times you do it till 8. if that's confusing think of this as 4 to the 8th power.

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