Solve the compound inequality.6x - 2 > -56 and x + 8 < 9
A. x < -9 or x > 1
B. No solution
C. -9 < x < 1
D. -9 < x < 17
Answer: C
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Convert the numeral to Egyptian form.620
A. 
B. 
C. 
D. 
Use natural logarithms to solve the exponential equation symbolically.4(7 + 3x) = 
A. x = 
+ 
B. x = 
- 7
C. x = - 
- 
D. x = - 
+ 21
Solve the problem.Find the centroid of the first-octant portion of a solid ball of radius 5 centered at the origin.
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Solve the problem.The function A = A0e-0.00693x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 700 pounds of the material are placed in the vault, how much time will need to pass for only 431 pounds to remain?
A. 80 yr B. 140 yr C. 70 yr D. 75 yr