need help with both questions

7. Converting formulas Write a function simple_formula() that calculates and displays the result of x given by the formula below. Allow the user to specify how many equations they wish to calculate, then for each equation allow the user to input the numeric values of a and b. x = 2b - 7a+ 869 + Part 2 1. Getting started with graphics Read through the provided function draw_shapes(), which opens a blank window where the user can click to draw and move a circle. Try running the function to make sure you understand how it works. Then, modify it to display a 20 pixel square instead of a circle. The square should still be centered on the location the user clicks