Solve using matrices. 2x + y = 6 5x + 3y = 13
A. (5, -5)
B. (-4, 5)
C. (5, -4)
D. (-4, -5)
Answer: C
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Find the most general antiderivative.
dt
A. - 
+ C
B. - 
+ C
C. -9sin t + C
D. -9 cos t + C
Solve the problem.A weight is suspended on a system of springs and oscillates up and down according to P = 
[sin (2t) + sin t]where P is the position in meters above or below the point of equilibrium (P = 0) and t is time in seconds. Find the time when the weight is at equilibrium. Find the exact values. Do not use a calculator.
What will be an ideal response?
Solve the problem.What will it cost to buy ceiling molding to go around a rectangular room with length 19 ft and width 12 ft? The molding costs $2.72 per linear foot.
A. $103.36 B. $84.32 C. $168.64 D. $65.28
Solve the problem.Suppose that you have $10,000 to invest. Which investment yields the greater return over 9 years: 8.75% compounded continuously or 8.9% compounded semiannually?
A. Both investment plans yield the same return. B. $10,000 invested at 8.75% compounded continuously over 9 years yields the greater return. C. $10,000 invested at 8.9% compounded semiannually over 9 years yields the greater return.