Question

Which spreadsheet would you use to compute the first seven terms of the geometric sequence: an = 7 ∙ 5^n1?
Spreadsheet screenshot will be in replies

Answer 1

Formula for a geometric sequence, we use
an = a1 x r^n-1
anis the nth term of the sequence.
a1 is the first term in the sequence. To find the explicit formula, you will need to be given (or use computations to find out) the first term and use that value in the formula.
r is the common ratio for the geometric sequence. You will either be given this value or be given enough information to compute it. You must substitute a value for r into the formula.
n is treated like the variable in a sequence. For example, when writing the general explicit formula, n is the variable and does not take on a value. But if you want to find the 12th term, then n does take on a value and it would be 12.

Answer 2

So can you explain to me how to find the answer?

Answer 3

I am unsure what "n1" is

Answer 4

You just plug your numbers into the equation I gave you so, for the first term of the geometric sequence, just plug in n=1 and, looking at your given equation, you are given a1=7, and r=5

Answer 5

I am assuming n1 is just n

Answer 6

No it means n-1 and its an exponent

Answer 7

Ok...just plug in....so, to find the first term of the geometric sequence, just plug in the equation (the equation I gave to you) n=n1 (first term), a1=7 (given in your equation), r=5 (given in your equation)