Please help me on this !!(its due today :)

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

The sum of two numbers is 12 and their difference is 18 what are the two numbers