For numbers 1-5, determine whether or not the sequence given is arithmetic, and (if it is) find the common difference. For numbers 6-10, give the nth term rule for the given arithmetic sequence.
1. {3,-4, -5, -6...)
2. {1/2,5/2, 4, 11/2...}
3. {-2, -10,-18,-28...}
4. {1.5,3,4,5,6}
5. {2, 1, 1/2, 1/4...)
6. {5, -2, -9,-16...)
7. a=3 d= -2
8. A(12) = -14 d=1/3
9. A(9) = 1.5 d=3
10. A(4) = -30 d=-12/7

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?

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?