PLS HELP I DONT UNDERSTAND THIS

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation