Guided Practice Carlos believes that the grade he receives on his math test is directly related to the amount of hours he spends studying. The equation y=12x+50 equals 12 x plus 50 represents the percentage grade he thinks he will earn, where y is the percentage grade and x is the number of hours that he spends studying. What does the y-intercept in his equation represent?

A.
If Carlos doesn’t study at all, his grade will be 50%.

B.
Carlos will spend 50 hours studying for his math test.

C.
For each hour Carlos spends studying, his grade will improve by 12%.