Subtract 12 too get 1927-12=727
time is 7:27pm
Is this for calculus for for algebra?
I'm going to assume that you know calculus.
df
---- = 2ax + b must equal zero if (-1,2) is an extreme value of f(x).
dx
Thus, 2ax + b = 0, and 2ax = -b, or x = -b/(2a). This is the familiar "x-coordinate of the vertex of a parabola."
Here that x-value is -1, so -1 = -b/(2a). From this we get -2a = -b, or
b=2a
so the ordered pair could be (a, 2a).
Median is average. So add together all 18 tuition costs (4 times 2999 from dark blue, 6 times 5999 for green, 3 8999 for turquoise, and 11999 for red. Then add those all together. After that divide by 18(number of schools included in graph, also where we pulled that information from) that is how yoh find the median, or average.
