Perform the matrix operation.Given C = 
and D = 
, find C - 2D.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.An element decays at the rate of S(t) = se-0.086t, where t is time in years and s is the initial size in grams. If you have a 63-gram piece of this element, how many grams will you have 2 years from now? Round your answer to the nearest tenth of a gram.
A. 74.8 g B. 53.0 g C. 28.9 g D. 0.8 g
Solve the problem.A parallelogram has a base of length 2x + 1 and a height of x + 3 and has an area of 42 square units. Find the base and height of the parallelogram. (A = bh)
A. height = 3 units; base = 14 units B. height = 6 units; base = 7 units C. height = 14 units; base = 3 units D. height = 7 units; base = 6 units
Determine the amplitude or period as requested.Period of y = 5 cos (6?x + 3?)
A. 6?
B. 
C. 
D. 3
Use an integer or rational number to express the number representing change.Sales at Andrea's Formal Wear Shop were $4404 more this week than the sales last week.
A. 4404 B. -4404