Simplify to the form a + bi.28 + 86i2
A. 28 - 86i
B. 114
C. 28 + 86i
D. -58
Answer: D
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Evaluate the integral.
A. 
sin-1 
x + C
B. 
sec-1 
+ C
C. 
sec-1 
+ C
D. 
sec-1 
+ C
Solve the problem.A surveyor is measuring the distance across a small lake. He has set up his transit on one side of the lake 80 feet from a piling that is directly across from a pier on the other side of the lake. From his transit, the angle between the piling and the pier is 30°. What is the distance between the piling and the pier to the nearest foot?
A. 139 feet B. 69 feet C. 46 feet D. 40 feet
Solve the problem.The profit for a product is given by the function P(x) = 35x - 1086, where x is the number of units produced and sold. Find the marginal profit for the product.
A. -$35 per unit B. $1086 per unit C. $35 per unit D. -$1086 per unit
Match the equation of the ellipse with the appropriate description.49y2 = 11,025 - 9x2
A. x-intercepts (1225, 0), (-1225, 0); y-intercepts (0, 225), (0, -225) B. x-intercepts (225, 0), (-225, 0); y-intercepts (0, 1225), (0, -1225) C. x-intercepts (15, 0), (-15, 0); y-intercepts (0, 35), (0, -35) D. x-intercepts (35, 0), (-35, 0); y-intercepts (0, 15), (0, -15)