User row operations to change the matrix to reduced form.
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Calculate the coordinates of the new location of the point (0, -3) when it is rotated 30° counterclockwise about the origin. Remember that it is the matrix 
that rotates a point 30° counterclockwise about the origin.
A. 
B. 
C. 
D. 
Solve the problem.A student must choose 1 of 4 mathematics electives, 1 of 7 science electives, and 1 of 4 programming electives. How many possible course selections are there?
A. 28 course selections B. 112 course selections C. 224 course selections D. 15 course selections
Solve the problem.Find the measure of an angle such that the difference between its supplement and 2 times its complement is 34°.
A. 17° B. 197° C. 34° D. 98.5°
Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.10% of what number is 75?
A. 7.5 B. 750 C. 7500 D. 75