Find all solutions of the following equation in the interval [0,2pi).
4 sec^2x-4=0

What is 32+4 x (16 x 1/2) -2 show your work}

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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