Answer:
see explanation
Step-by-step explanation:
(8)
the common ratio r, of a geometric sequence is
r = =
= ......
r = =
= 8
(9)
The simplest way to evaluate the sum is to substitute k = 3, 4, 5, 6 into each term and sum them
(- 9 + 20) + (- 12 + 20) + (- 15 + 20) + (- 18 + 20)
= 11 + 8 + 5 + 2 = 26
Answer:
The total amount of money Shanika and her friends want to raise is <u>$2400</u>.
Step-by-step explanation:
Given:
After a storm damages the community center, Shanika and her friends hold fundraising.
After the first event, they raise $240, which is 10% of the total amount that they want to raise.
Now, to find the total amount of money that Shanika and her friends want to raise.
Let the total amount of money that Shanika and her friends want to raise be .
As given 10% of fundraise is $240.
So, according to question:
<em>Multiplying both sides by 100 we get:</em>
<em>Dividing both sides by 10 we get:</em>
Therefore, the total amount of money Shanika and her friends want to raise is $2400.