Help me plse Write the system of equations for the following scenario:
The sum of twice the square of the first number plus the second number is 9.
The difference between twice the first number and the second number is 15.
Linear Equation:
Quadratic Equation:

The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude