10. Steven spends 25 percent of his monthly income on food and rent, 20 percent on entertainment, and 15 percent on taxes and miscellaneous
expenses. In addition, he gives 15 percent to charity and then saves the
remainder. If he saves $200 each month, how much does he give to charity?

answer are

step-by-step explanation:

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.