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It’s so cool seeing someone perfectly explain something like this. You helped remind me of something that I knew and just got straight to the point of the answer. Thank you so much!
at 41:56, you just use the vertex formula to get the value of m faster because the only possible way to have 1 X-intercept is at the vertex. The formula -b/2(a) = the x value of the vertex, therefore when you use that you can easily get m = -8
Since they're testing our ability to picture the lines and understanding that as long as different y-int are used (as long as z doesn't equal 1) the lines will always be parallel. D isn't a good option because it only represents *one* option for no interception, whereas A gives the "all encompassing" value; any number, as long as it's not 1 will be correct so in this case it's the best answer.
D works since it's not a 1, but since ANY number that isn't 1 would work it isn't the most accurate choice. Many of the ACT problems have answer choices that are true but aren't the best option, so make sure you check for that when you take the test.
Yeah, I'm still somewhat confused on why he did that; however, there's actually a few youtube videos that guided me through how to solve overflow problems using log on your calculator. Hope this helps!11
If you were to square it, it would be 2(2), the first represents the number of zeroes in your base, and the second is your power. the output would give you the total amoutn of zeroes. Similarly, we are are putting 100 to the power of 100, which is to the power of 100. That means that it would be 2, which is the number of zeroes in 100, times 100^100, which is the exponent. Giving the result of 2(100^100)
