Polygon PQRS is a scaled copy of polygon ABCD what is the angle in the scaled copy that corresponds to angle ABC

What signals you that factoring by grouping is the best method to use when factoring a problem?

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

If you could answer these your a life saver