# math

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a catering company has 15 customers orders during its first month. for each month afterward the company has double the number of orders of the previous month. how many orders in total did the company fill in its first year?

• math -

One way to solve this problem is simply to keep doubling the numbers.
1 - 15
2 - 30
3 - 60
4 - 120
5 - 240

etc.

Be sure to add your numbers together to find the total orders for the year.

• math -

but would i have to use the geometric series to find this out

• math -

looks like a GS where
a = 15
r = 2
n = 12

S₁₂ = 15(2^12 - 1)/(2-1)
= 61425

• math -

ok thanks you

• math -

but when i did it i got 30720

• math -

In month 12, there were 30,720 customer's orders.

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