<u>Understanding:</u>
The sum of a geometric series is, 
, with a being the start point and r is the common ratio. We can also use the following formula to make life easier 
, a is your start point, r is the common ratio, and n is the number of terms, which in our case is S7.
<u>Solution:</u>
Our start point is 1, 
,
The common ratio is 5, 
,
And finally, the number of terms is 7, 
.
The answer is [A] 19531.
Answer:
(g - f)(x) = 3x - 33
Step-by-step explanation:
Arrange f(x)= 2x + 13 and g(x) = 5x -20 vertically as shown below:
g(x) = 5x - 20
-f(x) = -2x - 13
----------------------
(g - f)(x) = 3x - 33
Answer:
ΔMLN - ΔΡQO
Step-by-step explanation:
Therefore,due to the correct pattern ΔMLN - ΔΡQO is correct.
Use the calculator to find:
169^2=169*169=28561
Answer:
A
Step-by-step explanation:
3+7 is 10, not 11. Therefore, x cannot be 3.
