Decide whether the matrices are inverses of each other. (Check to see if their product is the identity matrix I.)
and 
A. Yes
B. No
Answer: A
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Graph the equation by plotting points.y = x2 - 1
A. 
B. 
C. 
D. 
Perform the indicated operation. Simplify the result, if possible.1 + 
A. 
B. 
C. 
D. 
State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = -10x5 + ?x4 - 
A. Yes; degree 5 B. Yes; degree 10 C. No; x4 has a non-integer coefficient D. Yes; degree 9
Solve the problem.Among first-year students enrolled in a two-year program at a trade school, the following was determined to be true: 73% would successfully complete the year and go on to the second year; 16% would repeat the year; and 11% would drop out of the program. Among the second-year students, 83% would successfully complete the year and graduate; 9% would repeat the year; and 8% would drop out of the program. In the long run, what percentage of the second-year students will drop out of the program? Round your answer to the nearest whole number.
A. 18% B. 3% C. 9% D. 14%