Perform the indicated operations.
+ 
A. 
x6 + 
B. 
x2 + 
x + 4
C. 
x2 - 
x + 
D. 
x4 - 
x2 + 
Answer: C
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Solve the problem.A power plant is located on a river that is 700 feet wide. To lay a new cable from the plant to a location in a city 1 mile downstream on the opposite side costs $175 per foot across the river and $150 per foot along the land. Suppose that the cable goes from the plant to a point Q on the opposite side that is x feet from the point P directly opposite the plant. Write a function C(x) that gives the cost of laying the cable in terms of the 
A. C(x) = 150
+ 175(5280 - x)
B. C(x) = 175(700 - x) + 150(1 - x)
C. C(x) = 175
+ 150(5280 - x)
D. C(x) = 175
+ 150(1 - x)
Find an approximation of the sum of the series accurate to two decimal places.
 Figure 3.png)
Solve the problem.A power boat in still water maintains a speed of 20 miles per hour. The boat heads directly across a river perpendicular to the current which has a speed of 7 miles per hour. Find the actual speed and direction of the boat, rounded to the nearest whole number.
A. 20 miles per hour; 20° off course B. 21 miles per hour; 19° off course C. 12 miles per hour; 36° off course D. 11 miles per hour; 40° off course
Match the quadratic function to the correct graph.y = -(x + 6)2 + 5
A. 
B. 
C. 
D. 