 So this one, this question asks us convert the length 7.0 meters to feet, and it gives us these two conversion factors. 1 inch equals 2.5 centimeters, and 12 inches equals 1 foot. But it doesn't give us a conversion factor from something to meters, but it gives us the centimeters. So do you know that conversion factor from meters to centimeters? How many centimeters are there in 1 meter? 100. Yes, 100. You don't know it, know it, okay? You're going to have to know your metric to metric conversions by tomorrow, so get them down. So those are the three conversion factors that you need for this problem. So whenever you're going to convert something, you're just going to have to put the units on the bottom that you don't want, and the units at the top that you do want, okay? So can we convert meters to something else with the conversion factor here? Can we? Yeah, we can. We can convert it to what? Centimeters, right? So in this case, we would put what? 1 meter down here, and 100 centimeters up there, and that's going to cancel my meter. Okay, did I want it in centimeters? No. I wanted it in what? Feet, right? So what units are we in now? Centimeters, is that the same thing as feet? No. No. Can we convert it to something else? Inches. Inches, right? So we're getting closer. So what are we going to put at the bottom here? 20, 20, 25, 40 centimeters. 20, 25, 40 centimeters, and at the top, 20. So that's going to cancel that, but we're still not in feet yet, right? So we're going to have to multiply this again by another conversion factor. Is that a conversion factor of that? Okay, so what are we going to put up here? One foot, and down here? 12 inches, and cancel, cancel. Are we in feet now? Yes. Yep, so that's all we've got to do. Multiply, and we'll get our answer. So how many significant figures is this going to go to? To two, right? Because that was the only number that was presented in the problem. Okay, so what do I do? Seven times 100 divided by 2.54, and then divide that by 12. So this to two significant figures is 23. 23. Does that make sense? So you've got to have to figure out that conversion factor that you need, metric to metric.