Multiply the polynomials.(4y - 9)(16y2 + 36y + 81)
A. 16y3 + 729
B. 64y3 + 324y2 - 729
C. 64y3 + 729
D. 64y3 - 729
Answer: D
Mathematics
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Solve the problem.A formula for calculating the distance, d, one can see from an airplane to the horizon on a clear day is 
where x is the altitude of the plane in feet and d is given in miles. How far can one see in a plane flying at 21,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 1281 miles B. 160.1 miles C. 12,810 miles D. 176.8 miles
Mathematics
Solve.3
= 4
A. no solution B. x = 7 C. x = 8 D. x = -7
Mathematics
Find the LCM of the list of numbers.42, 378
A. 42 B. 756 C. 1134 D. 378
Mathematics
Write an equivalent expression using the distributive law.8(r + k)
A. 8r - 8k B. 8r + 8k C. r(8 + k) D. 8r + k
Mathematics