Decide whether the pair of lines is parallel, perpendicular, or neither.3x - 6y = -818x + 9y = 14
A. parallel
B. perpendicular
C. neither
Answer: B
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Perform the indicated operation. Simplify the result.
+ 
A. 
B. 
C. 
D. 
We can encode a message by assigning the numbers 1 - 26 to the letters a - z of the alphabet, respectively, and assigning 27 to a blank space. To further encode a message, we can use an encoding matrix A to convert these numbers into new pairs or triples of numbers. Use matrix A to encode the given message.Use the matrix A = 
to encode the message "Thank you" into triples of numbers. Combine the triples of numbers to give the encoded numerical message.
What will be an ideal response?
Solve the problem.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. By using linear regression, the following function is obtained: 
where x is the number of hours spent in the lab and y is the grade on the test. Use this function to predict the grade of a student who spends 14 hours in the lab. Round to the nearest tenth. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 62.6 B. 74.6 C. 65.4 D. 58.6
Establish the identity.
= 
What will be an ideal response?