Multiply.(3x + 1.3)(3x - 1.3)
A. 9x2 - 2.6
B. 9x2 - 16.9
C. 9x2 - 7.8x- 1.69
D. 9x2 - 1.69
Answer: D
Mathematics
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Simplify the following radical expression.
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A. 
B. 
C. 
D. 
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Find the product.(-9)(-9)
A. 91 B. -81 C. -91 D. 81
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Divide and simplify. Assume that all variables represent positive numbers. 
A. 2a2b4
B. 2ab2
C. 2ab4
D. 2ab2
Mathematics
If possible, find the mode(s) of the data set.1.3, 0.6, 0.8, 1.3, 0.4, 1.5, 0.4, 1.6, 2
A. Two modes: 0.4 and 1.3 B. 1.3 C. 1.1 D. 0.4
Mathematics