Rewrite as an expression using only positive exponents.
A. 2x-5
B. 5x2
C. 2x5
D. 
Answer: C
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Find the area of the specified region.Shared by the circles r = 2 and r = 4 cos ?
A. 
(2? + 3
)
B. 
?
C. 2?
D. 
(4? - 3
)
Estimate the value of the quantity.Joe wants to find out how far it is across the lake. His boat has a speedometer but no odometer. The table shows the boats velocity at 10 second intervals. Estimate the distance across the lake using right-end point values.
A. 3850 ft B. 5800 ft C. 385 ft D. 3950 ft
Solve the problem.Find a curve through the point (0, 3) whose length integral, 0 ? x ? 1, is L = 
A. y = 2x + 3 B. y = x C. y = x2 + 3 D. y = x2
Find a rectangular equation for the plane curve defined by the parametric equations.x = 3 tan t, y = 4 sec t; 0 ? t ? 2?
A. y = x2 - 9; for x in -3 ? x ? 3
B. 
+ 
= 1; for x in -? < x < ?
C. 
- 
= 1; for x in -? < x < ?
D. y = 4
; for x in -? < x < ?