How would this problem change if you took
away the numbers and were only told that
cupcake equals zero.

all it means is function 3

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

2y+y=5

add 2y and y