The answer is 35000. Because 2 significant figures means the 2nd number, in this case it is the number 4 and if we want to round off something, look at the next number, if more than 5 or 5, you must round up.
2x+79+32=180
2x+111=180
2x=69
x=34.5
The graph that best represents the system of inequalities would be the second one.
y > -2x - 2
y x + 4