The standard form of quadratic function is:
f(x) = a x² + b x + c
where: a - a leading coefficient, c- constant term:
a = 2, c = -3
Answer: D) f( x ) = 2 x² + 3 x - 3
9090 is 70% of 12,985.7143
keeping in mind that the points are A(-8 , 6) and C(2 , 5), so
![\textit{internal division of a segment using a fraction}\\\\ A(\stackrel{x_1}{-8}~,~\stackrel{y_1}{6})\qquad C(\stackrel{x_2}{2}~,~\stackrel{y_2}{5})~\hspace{8em} \frac{2}{5}\textit{ of the way from A to C} \\\\[-0.35em] ~\dotfill\\\\ (\stackrel{x_2}{2}-\stackrel{x_1}{(-8)}~~,~~ \stackrel{y_2}{5}-\stackrel{y_1}{6})\qquad \implies \qquad \stackrel{\stackrel{\textit{component form of}}{\textit{segment AC}}}{\left( 10 ~~,~~ -1 \right)} \\\\[-0.35em] ~\dotfill](https://tex.z-dn.net/?f=%5Ctextit%7Binternal%20division%20of%20a%20segment%20using%20a%20fraction%7D%5C%5C%5C%5C%20A%28%5Cstackrel%7Bx_1%7D%7B-8%7D~%2C~%5Cstackrel%7By_1%7D%7B6%7D%29%5Cqquad%20C%28%5Cstackrel%7Bx_2%7D%7B2%7D~%2C~%5Cstackrel%7By_2%7D%7B5%7D%29~%5Chspace%7B8em%7D%20%5Cfrac%7B2%7D%7B5%7D%5Ctextit%7B%20of%20the%20way%20from%20A%20to%20C%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%28%5Cstackrel%7Bx_2%7D%7B2%7D-%5Cstackrel%7Bx_1%7D%7B%28-8%29%7D~~%2C~~%20%5Cstackrel%7By_2%7D%7B5%7D-%5Cstackrel%7By_1%7D%7B6%7D%29%5Cqquad%20%5Cimplies%20%5Cqquad%20%5Cstackrel%7B%5Cstackrel%7B%5Ctextit%7Bcomponent%20form%20of%7D%7D%7B%5Ctextit%7Bsegment%20AC%7D%7D%7D%7B%5Cleft%28%2010%20~~%2C~~%20-1%20%5Cright%29%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill)
![\left( \stackrel{x_1}{-8}~~+~~\frac{2}{5}(10)~~,~~\stackrel{y_1}{6}~~+~~\frac{2}{5}(-1) \right)\implies \left(-8+4~~,~~6-\frac{2}{5} \right) \\\\[-0.35em] ~\dotfill\\\\ ~\hfill B\left(-4~~,~~5\frac{3}{5} \right)~\hfill](https://tex.z-dn.net/?f=%5Cleft%28%20%5Cstackrel%7Bx_1%7D%7B-8%7D~~%2B~~%5Cfrac%7B2%7D%7B5%7D%2810%29~~%2C~~%5Cstackrel%7By_1%7D%7B6%7D~~%2B~~%5Cfrac%7B2%7D%7B5%7D%28-1%29%20%5Cright%29%5Cimplies%20%5Cleft%28-8%2B4~~%2C~~6-%5Cfrac%7B2%7D%7B5%7D%20%5Cright%29%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20~%5Chfill%20B%5Cleft%28-4~~%2C~~5%5Cfrac%7B3%7D%7B5%7D%20%5Cright%29~%5Chfill)
Substitue w for 1/9 and you'll get 1/2 (1/9) +2. Multiply 1/2 by 1/9 and the equation will be 1/18 + 2. The answer will be 2 1/18
The mean is 20 and median is 20 the mode is 15 the range is 36 so that is your answer and hope this helps