SOLUTION: Please help with this. Identify a quadratic model that represents the data when t = 4 corresponds to 1994. Which of the following functions best represents the data using a quad

Algebra ->  Test -> SOLUTION: Please help with this. Identify a quadratic model that represents the data when t = 4 corresponds to 1994. Which of the following functions best represents the data using a quad      Log On


   



Question 1055519: Please help with this.
Identify a quadratic model that represents the data when t = 4 corresponds to 1994. Which of the following functions best represents the data using a quadratic model?
Number chart: https://s22.postimg.org/qf0zw00td/graph.png
A.) f(x) = +1.91x%5E2+%2B+12.+21x+%2B+20.74+
B.) f(x) = +1.91x%5E2+-+12.+21x+%2B+20.74+
C.) f(x) = +12.63x+-+16.53+
D.) f(x) = +12.63x+-+54.42+

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Only a or b are quadratics.
if you use 4 for x, a shows f(4)= to about 100.
b shows f(4) about equal to 4.
B.
graph%28300%2C300%2C-10%2C10%2C-10%2C70%2C1.91x%5E2-12.21x%2B20.74%29