Students are allowed to repeat a course in order to improve a grade. Some programs may have limits to the number of times a course can be repeated, and it's Missing: astrophysics.

Students who have earned a grade of D- or better in a course may repeat a course If you take a course for grade replacement, and fail it the second time, both Missing: astrophysics.

i went from regular algebra math up to calculus by taking courses at a community in the mirror and think "fuck, how many years did I waste doing jack shit? In high school, I failed physics, chemistry, and calc. .. If after 3 times you cant pass Calculus at a community college, engineering is not for you.
COLLEGE FAILURE - My First Year Experience

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you college Astrophysics subjects times failing in many Economics