Let U = {q, r, s, t, u, v, w, x, y, z}, A = {q, s, u, w, y}, B = {q, s, y, z}, and C = {v, w, x, y, z}. Find the indicated set.
? 
A. {s, t}
B. {q, s, u, v, w, x, y, z}
C. {q, r, s, t, u, v, x, z}
D. {w, y}
Answer: C
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Factor the expression.3a4b2 - 9a3b3
A. 3a2b2(a2 - 3ab) B. 3a3b3(a - 3) C. 3a3b2(a - 3b) D. 3a3b2(a + 3b)
Solve the problem.The final grade for an algebra course is determined by grades on the midterm and final exam. The grades for four students and two possible grading systems are modeled by the following matrices. src="https://sciemce.com/media/4/ppg__sdsd0523191652__f1q73g6.jpg" style="vertical-align: -15.0px;" />Find the final course score for Student 3 for both grading System 1 and System 2.
A. System 1: 76.5; System 2: 92.5
B. System 1: 48.6; System 2: 53
C. System 1: 85.4; System 2: 84.5
D. System 1: 76.6; System 2: 76
Divide. Simplify if possible.
÷ 
A. 
B. 1
C. 
D. 
Write the improper fraction as a mixed number.
A. 7
B. 6
C. 7
D. 8