Write the augmented matrix for the system. 9x + 3y = 24 7y = 35
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve using substitution:
Mathematics
Write the phrase as a mathematical expression. Use x as the variable.135 added to a number
A. 135x B. 135 + x C. 135 D. 135 - x
Mathematics
Use technology to compute r, the correlation coefficient.The following are costs of advertising (in thousands of dollars) and the number of products sold (in thousands): 
A. -.0707 B. .7077 C. .2456 D. .2353
Mathematics
Solve the problem.There were 25
yards of wire on a spool. After a customer bought 3
yards of wire from the spool, how many yards were left?
A. 21
yards
B. 22
yards
C. 21 yards
D. 20
yards
Mathematics