Find the indicated cross product.v = 4i + 2j + 6k, w = -5i + 2j + 3kFind w × v.
A. -18i - 6j + 6k
B. -6i + 39j - 18k
C. -42i - 6j - 18k
D. 6i + 42j - 18k
Answer: D
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Solve the problem. Round your answer to 2 decimal places when necessary.The population of a certain country is about 105 million. The overall birth rate is 19.9 births per 1000. Approximately how many births were there in the country?
A. 20,900 births B. 20.9 million births C. 2.09 million births D. 209,000 births
Find the product, and write in lowest terms, if necessary.3 ? 
A. 
B. 
C. 
D. 15
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.(4x4y2 + 5x3y + 6y) - (2x4y2 + 7x3y + 9y + 3x)
A. 6x4y2 + 12x3y + 15y + 3x B. 2x4y2 - 2x3y - 3y - 3x C. 2x4y2 - 2x3y - 3y + 3x D. 2x4y2 + 2x3y - 3y - 3x
Write the expression in lowest terms.
A. 
B. 
C. 
D. 