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Numbers and Operations Videos 63 videos
SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?
SAT Math: Numbers and Operations Drill 1, Problem 2. If the masterpiece will be worth $45,055 in five years, what is its worth now?
SAT Math 1.3 Numbers and Operations. x and y must be which of the following?
SAT Math: Finding the Vertex of a Parabola from Information in a Word Problem 5 Views
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Description:
f(x) – 83 = 3x2 – 30x. The graph of f(x) models a mountain pass, which is the region between two peaks. The function measures the height in feet (hundreds), and f(x) = 0 represents sea level. The x-values represent the distance, also in hundreds of feet, from cabins in which hikers can stay. If f(c) represents the lowest point of the mountain pass, what is the value of c?
Transcript
- 00:00
Yeah My state is there and fx is three times
- 02:04
twenty eight times squared plus eight Interesting So the equation
- 02:07
is now in vertex form this thing The whole point
- 02:10
of this boondoggle is to find the vertex which is
- 02:12
just a tsh k right and here it's five and
Full Transcript
- 02:16
eight and we want to be sure we didn't come
- 02:17
all this way to mess things up with finish line
- 02:20
So we got to go back the problem and see
- 02:21
what we're supposed to find in the first place We
- 02:24
don't want the vertex or the height at the minimum
- 02:26
of half of season eight we want the vertex is
- 02:29
x value So forget that eat There is just five
- 02:33
That's the answer It's about
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