Iam doing test corrections and i found that this would be the graph for the function f(x)=4x^2-8x+7 but i’m not sure why.

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median amount spent? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Which of the following best describes the delian problem?

Tell whether the two rates form a proportion