Divide and simplify. Assume that all variables represent positive numbers. 
A. 
B. 
C. 
D. 
Answer: C
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Write an equation for the linear function and use it to answer the given question. Normaltown High School's pool record for the 100-yard freestyle was 46.7 in 1990. Assume that the record falls at a constant rate of 0.07 second per year. What does the model predict for the record in 2017?
A. R = 46.7 + 0.07t; 48.59 seconds B. R = 46.7 - 0.07t; 44.81 seconds C. R = 46.7t - 0.07; 1260.83 seconds D. R = 46.7t + 0.07; 1260.97 seconds
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.63 ÷ (-9)
A. 8 B. -8 C. -7 D. 7
Multiply.8x7(4x + 2)
A. 48x7 B. 32x + 16 C. 32x8 + 2 D. 32x8 + 16x7
Factor by grouping.6x2 + 13x + 6
A. 6x2 + 13x + 6 B. (3x - 2)(2x - 3) C. (6x + 2)(x + 3) D. (3x + 2)(2x + 3)