For a concert, mark arranged chairs in 55 rows. he placed 150 chairs in each row.
1. how many chairs did he use?
2. if he removed 13 rows, how many chairs were left?

Can (2,3 and square root 10) be sides ona right triangle?

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

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