Solve the problem.The polynomial 
measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 11 and 12 seconds?
A. Yes
B. No
Answer: A
Mathematics
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Solve the problem. Round to the nearest hundredth.21 is 2% of what number?
A. 42.00 B. 105.00 C. 10,500.00 D. 1050.00
Mathematics
Find the product.( 2x3- x2 + 3x - 1) (2x + 3)
A. 5x4 - 4x3 + 2x2 - 7x + 3 B. 4x3 + 4x2 + 3x + 7 C. 3x4 + 8x3 + 6x2 + 9x - 5 D. 4x4 + 4x3 + 3x2 + 7x - 3
Mathematics
Factor by substitution.5( z - 8)2 - 33( z - 8) - 14
A. ( 5z - 38)( z - 15) B. ( 5z + 38)( z - 11) C. ( 5z - 39)( z - 14) D. ( 5z - 38)( z + 15)
Mathematics
Add the numbers using the number line.-100 + 90 
A. 10 B. 190 C. -190 D. -10
Mathematics