Convert the angle in radians to degrees.
A. 30°
B. 1080°
C. 15°
D. 60°
Answer: A
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?For which whole number values of r does the volume of a sphere have a numerically larger value than the surface area of a sphere?
A. ?r> 2 B. ?r> 3 C. ?r> 0 D. ?|r| > 1 E. ?The volume of a sphere always has a numerically larger value than the surface area of a sphere.
Solve the problem.An exterminator activates an aerosol "fogger" in a large auditorium. The concentration of insecticide immediately afterwards can be modeled by the function C(x, y, z) = -0.0001 ln
,where x, y, and z are measured in feet from a particular floor-level corner of the room. To escape the insecticide, a flying insect located at 
needs to fly immediately in the direction of greatest decrease in concentration. Find the unit vector indicating the direction the insect should fly.
A. u = 
B. u = 
C. u = 
D. u = 
Solve the problem.Sue drove her car 304 miles in January, 351 miles in February, and 485 miles in March. If her average mileage for the four months from January to April is to be at least 389 miles, how many miles must she drive in April?
A. at least 416 miles B. at most 389 miles C. at most 416 miles D. at least 382 miles
Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-23 + (-9)
A. 32 B. -14 C. 14 D. -32