Simplify the expression. Write the result using positive exponents only.
A. x3
B. 
C. 
D. 
Answer: D
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Multiply in the indicated base.
A. 3435nine B. 3445nine C. 3343nine D. 3345nine
Find the least common multiple for the set of numbers.45, 28, 150
A. 1050 B. 630 C. 1260 D. 6300
Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables. Then use back-substitution to find the solution.
A. {(4, -4, -7)} B. {(250, 38, -7)} C. {(178, -46, -7)} D. {(6, 1, -8)}
The table lists data that are exactly linear. (i) Find the slope-intercept form of the line that passes through these data points. (ii) Predict y when x = -1.5 and 4.6. 
A. y = 0.7x - 4.9; y = -5.95, y = -1.68 B. y = 0.7x + 4.9; y = 3.85, y = 8.12 C. y = -0.7x - 4.9; y = -3.85, y = -8.12 D. y = -0.7x + 4.9; y = 5.95, y = 1.68