Perform the indicated operations.(10x2 + 6x + 10) - (-3x2 - 6)
A. 7x2 + 12x + 10
B. 7x2 + 6x + 4
C. 13x2 + 12x + 10
D. 13x2 + 6x + 16
Answer: D
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Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.- 
+ 
A. - 
B. - 
C. - 
D. - 1
Solve. Express the result in scientific notation. Round to the nearest hundredth, if necessary.If the density of a substance is 9.89 × 10-3 tons per cubic foot, what would be the mass of 
cubic feet of this substance. (Use the formula D = 
.)
A. 5.29 × 10-6 tons B. 0.53 × 10-7 tons C. 5.29 × 10-7 tons D. 5.29 × 10-8 tons
Determine whether the statement is true or false.
= log7 x - log7 y
A. False B. True
Name the property illustrated by the statement.6 + 3 = 3 + 6
A. identity property of addition B. associative property of addition C. distributive property D. commutative property of addition