Combine like terms.-3b + 7b
A. -10b
B. -4b
C. 4b2
D. 4b
Answer: D
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Solve the problem.The profit (in millions of dollars) for Allied Manufacturing can be approximated by 
where x is the year 1989 ? x ? 2009. Approximate the average rate of change over a 3-year period. Round your answer to three decimal places when appropriate.
A. -0.675 million dollars B. -6.285 million dollars C. 0.135 million dollars D. -0.885 million dollars
Add.+ 
A. 7070.7524 B. 7070.7534 C. 7070.7434 D. 7070.8544
Solve the problem.Two forces of magnitude 25 pounds and 40 pounds act on an object. The force of 40 lb acts along the positive x-axis, and the force of 25 lb acts at an angle of 80° with the positive x-axis. Find the direction and magnitude of the resultant force. Round the direction and magnitude to the nearest whole number.
A. Direction: 40°; magnitude: 47 lb B. Direction: 4°; magnitude: 65 lb C. Direction: 51°; magnitude: 51 lb D. Direction: 29°; magnitude: 51 lb
Find the part.5000% of 128 universities
A. 6400 universities B. 640,000 universities C. 640 universities D. 64,000 universities