Divide, if possible.-105 ÷ (-5)
A. 
B. 21
C. -21
D. 11
Answer: B
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Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 32 and y = x2
A. 
= 0, 
= 16
B. 
= 0, 
= 
C. 
= 16, 
= 0
D. 
= 0, 
= 32
Use the formula f'(x) = 
to find the derivative of the function.f(x) = 2x2 + 3x + 5
A. 4x B. 2x + 3 C. 4x2 + 3x D. 4x + 3
Describe all symmetries of the figure shown.
A. 2 lines of symmetry B. 90° rotation symmetry C. 1 line of symmetry D. 180° rotation symmetry
Solve the problem.A sloping ramp is to be built with vertical supports at points B, C, and D as shown. The supports at A and E are 7 and 11 feet high, respectively. How high must the supports be at the points B, C, and D?
A. B = 8 ft, C = 9.5 ft, D = 10 ft B. B = 9 ft, C = 12 ft, D = 13 ft C. B = 8 ft, C = 9.5 ft, D = 11 ft D. B = 8 ft, C = 10.5 ft, D = 13.5 ft