Factor the sum or difference of two cubes.27 - t3
A. (3 + t)(9 - 3t + t2)
B. (3 - t)(9 + 3t + t2)
C. (3 - t)(9 + t2)
D. (3 + t)(9 - t2)
Answer: B
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Solve the problem.A firm estimates that it will sell N units of a product after spending x dollars on advertising, where 
and x is in thousands of dollars. By sketching the function determine how much the company should spend in order to maximize sales, and find the maximum sales.
A. The company should spend $250,000. Maximum sales are 187,488 units B. The company should spend $500,000. Maximum sales are 187,488 units C. The company should spend $500,000. Maximum sales are 62,488 units D. The company should spend $250,000. Maximum sales are 62,488 units
Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 4 inches tall and stand 40 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 10 inches from the lowest point of the cable.
A. 0.8 in. B. 1 in. C. 1.2 in. D. 4 in.
Find the requested probability.A fair coin is tossed 5 times. What is the probability of exactly 2 heads?
A. 0.3125 B. 0.1250 C. 0.0313 D. 0.0625
Find all values of x for which the following is true. ? sin x = 1 ?
A. k?
B. 
C. 
D. 
E. 