
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
According to the graph, what is the average monthly balance, in dollars, of Maria's checking account during the six-month period shown? [asy]
draw((0,0)--(19,0)--(19,8)--(0,8)--cycle,linewidth(1));
draw((0,2)--(19,2),linewidth(1));
draw((0,4)--(19,4),linewidth(1));
draw((0,6)--(19,6),linewidth(1));
draw((1,0)--(1,1)--(3,1)--(3,0)--cycle, linewidth(1));
fill((1,0)--(1,1)--(3,1)--(3,0)--cycle,lightgray);
draw((4,0)--(4,5)--(6,5)--(6,0)--cycle, linewidth(1));
fill((4,0)--(4,5)--(6,5)--(6,0)--cycle,lightgray);
draw((7,0)--(7,2)--(9,2)--(9,0)--cycle, linewidth(1));
fill((7,0)--(7,2)--(9,2)--(9,0)--cycle,lightgray);
draw((10,0)--(10,4)--(12,4)--(12,0)--cycle, linewidth(1));
fill((10,0)--(10,4)--(12,4)--(12,0)--cycle,lightgray);
draw((13,0)--(13,3)--(15,3)--(15,0)--cycle, linewidth(1));
fill((13,0)--(13,3)--(15,3)--(15,0)--cycle,lightgray);
draw((16,0)--(16,5)--(18,5)--(18,0)--cycle, linewidth(1));
fill((16,0)--(16,5)--(18,5)--(18,0)--cycle,lightgray);
label("J",(2,0),S);
label("F",(5,0),S);
label("M",(8,0),S);
label("A",(11,0),S);
label("M",(14,0),S);
label("J",(17,0),S);
label("50",(2,1),S);
label("250",(5,5),S);
label("100",(8,2),S);
label("200",(11,4),S);
label("150",(14,3),S);
label("250",(17,5),S);
label("100",(0,2),W);
label("200",(0,4),W);
label("300",(0,6),W);
label(rotate(90)*Label("Account Balance",(-4,4)));
label(rotate(90)*Label("(in dollars)",(-3,4)));
label("Maria's Checking Account Balance",(9,11));
label("Month",(9,-3));
[/asy]

Present the answer in LaTex format: \boxed{Your answer}
user