A class survey showed that students who participated in school government had higher grade- point averages concluded that having a position in school government increased the students grades. List two or more confounding variables that could have had an effect on conclusion.​

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Use sigma notation to represent the following series for 9 terms.