Consider the data points (2, 3), (3, 2), (5, 1), (6, 0).
(a) find the equation of the least-squares line y = β0 + β1x which best fits the data.
(b) find the equation of the least-squares parabola y = β0 + β1x + β2x 2 which best fits the data.
(c) calculate how much ‘better’ the parabola fits the data than the line: calculate and compare ~y − xβ~ 2 , which is the sum of squares of the errors terms, for the line and parabola found in parts (a) and (b).

alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.

credit scoring calculations, such as the fico score, look at a few key factors related to your debt. the amount of overall debt you carry, the ratio of your credit card balances to your credit limit (also called credit utilization), and the relation of your loan balances to the original loan amount.

my answer was deleted because it was to vague the answer is 12.76 becuase its in the hundreths place. john