What is a great circle?

Will mark brainliest! ( explain the answer too, it can be one sentence)

Acollege student takes out a $7500 loan from a bank. what will the balance of the loan be after one year(assuming the student has not made any payments yet) a. if bank charges 3.8% interest each year ?

The equation y=1/2x+4 is graphed. which equation would intersect this line at the point (4,6). a: y=6. b: y=6x. c: y=4. dy=4x