What is the sum of the geometric sequence 1,3,9, if there are 13 terms

The answer is 797,161

Step-by-step explanation:

This one is fairly easy if tedious.

How do you get from to 3 from 1? (multiply 1 by 3).

How do you get to 9 from 3? (multiply 3 by 3).

Then simply multiply each successive result by 3 until you have 13 results. Then add those 13 results.

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.