A furniture delivery store advertises free delivery up to a 50 mile radius from the store. When the store’s location is placed on a map, its coordinates are (10, 20). Part a: Write an equation that represents the free delivery area.
Part b: Does a customer who lives at coordinates (20, -40) qualify for free delivery?
Part c: Explain how you know.

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x