Answer:
$120
Step-by-step explanation:
They have raised $780 and need to raise $900.
(Total amount they need to raise) - (total amount they raised) = (how much more they need to collect)
$900 - $780 = $120
To solve this we are going to use the formula for the nth term of a geometric sequence:

where

is the nth term

is the first term

is the common ratio

is the place of the term in the sequence
Notice that we can infer for our problem that

and

.
Now, to find our common ratio, we are going to use the formula

where

is the current term in the sequence

is the previous term in the sequence
for

and

:


Since

, we can conclude that

.
Notice that the first therm of our geometric sequence is -5, so

. Since

, we can conclude that

.
We can conclude that the values of B and C in our geometric sequence are: 
and

.
Yo sup??
Area of the figure=A
A=l*b
=2x(x+2)
=2x^2+4x
Therefore the correct answer is option B
Hope this helps
Answer:
a. 62
Step-by-step explanation:
use the Bodmas method
=3×9-5+20×2
=<u>62</u><u> </u>
40 ÷ 5 = 8 ( how much 1 cd costs )
8 × 2 = 16