Perform the indicated operation(s). Simplify if possible.
+ 9
A. 4 + 9x
B. 
C. 
D. 4x + 9
Answer: C
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Write the number in expanded form.7,000
A. (7 ? 103) + (0 ? 102) + (0 ? 101) + (0 ? 100) B. (7 ? 100) + (0 ? 101) + (0 ? 102) + (0 ? 103) C. (7 ? 104) + (0 ? 103) + (0 ? 102) + (0 ? 101) D. (7 ? 101) + (0 ? 102) + (0 ? 103) + (0 ? 104)
Write in logarithmic form.1251/3 = 5
A. 
= log5125
B. 5 = log125
C. 
= log1255
D. 5 = log1/3125
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this. y = 3x + 43x + y = -2
A. (-1, 1) B. (1, -1) C. (1, -5) D. (-2, -2)
Write a system of equations associated with the augmented matrix. Do not try to solve.
A. -7x + 2y = 6 3x + 5y = -9 B. 2x - 7y = 6 5x + 3y = -9 C. 2x - 7y = -6 3x + 5y = 9 D. 2x - 7y = 6 3x + 5y = -9