Solve the problem.The area of a circle is 49? square meters. Find its radius.
A. 24.5 m
B. 14 m
C. 6 m
D. 7 m
Answer: D
Mathematics
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Find the average value of the function f over the given region.f(x, y) = 
over the region bounded by 
, 
, 
, and 
.
A. 
ln 2
B. 72 ln 2
C. 
ln 2
D. ln 2
Mathematics
Solve the problem.Find the exponential function f that models this data. Round the coefficients to the nearest hundredth.
A. f(x) = (0.17)(567.57)x B. f(x) = (527.34)(1.09)x C. f(x) = (567.57)(0.17)x D. f(x) = (1.09)(527.34)x
Mathematics
Write the equation for the shape described.The upper semicircle centered at (0, 0) with radius 3
A. y = 
B. y = -
C. y = 
D. y = 
Mathematics
Find the equation for the given conic in the x'y'-coordinates when the coordinate axes are rotated through an angle ?.14x2 + 12
xy + 2y2 - 23 = 0; ? = 30°
A. 
- 
= -1
B. 
- 
= 1
C. 
+ 
= 1
D. 
- 
= 1
Mathematics