Use the product rule to simplify. Write the results using exponents.(-2)8 ? (-2)3
A. -424
B. (-2)11
C. 211
D. 411
Answer: B
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Use the substitution method to solve the system. x + y = 96x + 6y = 54
A. (9, 6) B. (3, 6) C. Infinite number of solutions D. (0, 0)
Graph the line.y = -2x
A. 
B. 
C. 
D. 
Solve the problem.The side of an equilateral triangle is 
shorter than the side of a square. The perimeter of the square is 
more than the perimeter of the triangle. Find the length of a side of the triangle.
A. 13 inches B. 15 inches C. 16 inches D. 18 inches
Solve the problem.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. By using linear regression, the following function is obtained: 
where x is the number of hours spent in the lab and y is the grade on the test. Use this function to predict the grade of a student who spends 14 hours in the lab. Round to the nearest tenth. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. 62.6 B. 74.6 C. 65.4 D. 58.6