Mr. Dionne is the band director at school. He asked students to record how long they have played an instrument. The dot plot shows data he has recorded. What unit of measure is used in the study?

A. Number of observations

B. Number of instruments

C. Number of students

D. Years

false

step-by-step explanation:

you need to give us more information since we can't answer

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.