Solve. Remember to insert units when writing your answer.David normally weighs 96 kilograms, but he lost 3000 grams after being sick. Find David's new weight.
A. 93 kg
B. 95.7 kg
C. 99 kg
D. 66 kg
Answer: A
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Refer to this figure to answer the question. Assume 
and 
are parallel.
Are ?BED and ?EIJ supplementary?
A. No B. Yes
Solve the problem.Three different high schools plan to order the same three text books. School A plans to order 90 of book 1, 20 of book 2, 80 of book 3. School B plans to order 60 of book 1, 20 of book 2, 20 of book 3. School C plans to order 80 of book 1, 100 of book 2, 70 of book 3. The cost of book 1 is $15 per copy, the cost of book 2 is $20 per copy, and the cost of book 3 is $25 per copy. What matrix product displays the cost to each school of buying the textbooks? Display the two matrices which must be multiplied and their product.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Write the quotient in the standard form.
A. 
+ 
i
B. - 
+ 
i
C. 
- 
i
D. - 
+ 
i
Find the determinant.det 
A. 3 B. -9 C. 9 D. 11