Solve the system using substitution.
A. (8, -1)
B. (7, -1)
C. (8, -2)
D. empty set; inconsistent system
Answer: C
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Solve.-7(x - 6) - 1x < -3(2x - 5) - 3x Put your answer in interval notation.
A. (-?, 27) B. (-?, -27) C. (27, ?) D. (-27, ?)
Graph the linear function using the slope and y-intercept.y = -3x - 2
A. 
B. 
C. 
D. 
Solve.The area code for a phone number in a city can be either 813 or 218. The rest of the 7-digit phone number can be formed with the digits 0 through 9. How many phone numbers can the city have before it needs to have another area code?
A. 20,000,000 B. 1,000,000 C. 18,000 D. 130,000
Perform the indicated operation.(7x3 + 6x5 - 7) + (7x4 - 3) - (-5x4 + 4x5 + 3x3)
A. 2x5 + 2x4 + 10x3 - 4 B. 10x5 + 2x4 + 10x3 - 4 C. 2x5 + 12x4 + 4x3 - 10 D. 10x5 + 2x4 + 10x3 - 10