SAT Prep: Test 1 Section 6 Part 4

Problems 11-14 on page 411
SAT Prep: Test 1 Section 6 Part 4

17 Replies to “SAT Prep: Test 1 Section 6 Part 4”

  1. awesome vid, nonetheless.

    for a moment, i thought i was the one with the mistake.

  2. i have no idea what happened @ 13 lol
    well, guess i’m off to the functions video XD

  3. If you activate the annotations, you’ll see a note warning that it should be g(2) and not g(3).
    I was watching this video offline and came here to see whether that error got corrected later on.

  4. Yeah, I solved this by going the other way around. I started with an equation:
    a + (a+1) + (a+2) + (a+3) + (a+4)=1000. Combine like terms gives you 5a + 10 =1000. Which turns to 5a = 990
    Solve for a and you get a =198. So we know a is the least, so the numbers being consecutive means our largest number is a + 4, or 198 +4 = 202. This all took 20 seconds. But was one step longer than yours because you started from the greatest number down.

  5. So.. How do we find out g(2)? There isn’t any additional information given about the domain or range, right?
    Is there a trick to finding out how high the point in the graph is at x=2? Or should we assume the point where y=0 is x=2?
    Everything else in that sum is easy. But I find functions as a whole difficult topic.

  6. No!…stop cheating and misleading us, the correct answer is 3, you have evaluated g(3) instead of g(2)… avoid careless mistakes!

  7. It is g(2), so you count units at the x-axis then you will add 1 unit above to the 2 and get 3 as the correct answer

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