[Video] Q7: The number of rooftops with solar panel installations in 5 cities is shown in the graph above. if the total number of installations is 27,500, what is an appropriate label for the vertical axis of the graph?

Explanation for Question 7 From the Math (Calc) Section on the Official Sat Practice Test 1

Now number seven, we see that the number of rooftops with solar panel installations 2 in five cities, a, B, C, 3 and D right here, um, are shown in the graph above. 4 And if the total number of installations is 27,500, 5 what is an appropriate label for the axis of the graph? 6 Right? And so basically what we're thinking about here is units. 7 Now, if we look at all of these answer choices, 8 we know we're talking about the number of installations, but we need to figure 9 out if it's tens, hundreds, thousands, or tens of thousands. 10 And so we know that the total is 27,500 and our 11 highest was nine. So if our, 12 if our units are in tens of thousands, then that nine is not. 13 In fact the nine, it would be a 90,000 cause nine times 10,000 14 is 90,000. Now we know this unit would be far too big, 15 right? 16 Because 90,000 is much larger than the total combined. 17 So D can't possibly be right now, 18 if we think about it being with a intense, 19 then this would be 90. This would be 50. 20 This would be 60. This would be 40, 21 and this would be about 30. And if I add those together, 22 that's way, way less than the total. 23 So tens is too small, right? It's the opposite of answer choice D and 24 in fact, B is also going to be too small. 25 If it's being it's in hundreds, 26 then everything would be in hundreds, right? And then I'd have one thousand one thousand eight hundred. 27 That total would be 2,700, 28 which is still far too small, 29 right? It's about a 10th of th...