Solve the problem.The volume of a sphere is 3x2 + 21x. The volume of a smaller sphere is 18x + 126. Find an expression, in factored form, for the difference of the volumes of the two spheres.
A. 3(x - 7)(x + 6)
B. (3x + 7)(x - 6)
C. (x + 7)(3x - 18)
D. 3(x + 7)(x - 6)
Answer: D
Mathematics
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Solve the problem.The graph below shows the first derivative of a function 
. Select a possible graph f that passes through the point P. f'
A. 
B. 
C. 
D. 
Mathematics
Give the measure of the requested angle.The supplement of angle x is two times the angle. Find the measure of the angle and its supplement.
A. 60° and 120° B. 30° and 60° C. 45° and 135° D. 45° and 90°
Mathematics
Solve the equation.
- 
= 
A. {7} B. {31} C. {-7} D. ?
Mathematics
Find the dimension of the matrix. Tell if the matrix is a square, column, or row matrix, when applicable.
A. 4 × 1; column B. 4 C. 1 D. 1 × 4; row
Mathematics