Simplify the expression. Write the result without using negative exponents. (Assume all variables represent nonzero real numbers.)(x-4y6)-1
A. 
B. 
C. 
D. 
Answer: C
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Find an equation for the ellipse described.Foci at (1, 4) and (7, 4); length of major axis is 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Provide an appropriate response.Suppose the demand equation for the manufacturer's product is p = 100e-0.04q, where p is the price per unit for q units. Find the marginal revenue function.
What will be an ideal response?
Simplify.-(-(-3))
A. -4 B. -3 C. 3 D. 4
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 27,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 16,470 mi B. 1647 mi C. 181.5 mi D. 200.5 mi