Find the sum of the first 9 terms in the following geometric series.
Do not round your answer.
64 + 32 + 16 + ...

127.75

Step-by-step explanation:

The geometric series above has a rule of

a+(a/2)+(a/4)+(a/8)

and so forth until you get to 9 numeric values.

Therefore, the whole geometric series up to 9 term is:

64+32+16+8+4+2+1+0.5+0.25=127.75

1      2   3    4  5  6  7   8      9    Terms

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart