The science club hosts a bake sale every year to raise money for
the state robotics competition.
This year, the club earned $20
more than twice what it earned
last year.
Let x represent the amount
raised last year
"More" means adding, and "twice" means multiplying by 2.
What is the algebraic expression? Explain how you came to this conclusion

2y+y=5

add 2y and y

let's first notice, the center of the hyperbola is at the origin, since the focus points are equidistantly 3 units away from the origin, that also means that the distance "c" from the center to either focus is 3.

it should also be notable that, the traverse axis for this hyperbola is vertical, or namely over the y-axis and therefore, the positive fraction will be the one with y-variable.

the traverse "a" component or distance from the center to either vertex is not 2, is more than 2, so we can safely put it at √5 ≈ 2.24.