Solve the equation in the real number system.x3 + 7x2 - 16x + 18 = 0
A. {1}
B. {-9, 9}
C. {9}
D. {-9}
Answer: D
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Solve the problem.A guitar string is plucked so that it vibrates with a frequency of 
Suppose the maximum displacement at the center of the string is 
Find an equation of the form 
to model this displacement. Round constants to 2 decimal places.
A. s(t) = 0.49 cos 9.71t B. s(t) = 0.98 cos 9.71t C. s(t) = 0.98 cos 383.27t D. s(t) = 0.49 cos 383.27t
Solve the problem.How much will it cost to carpet a 12 ft by 22 ft room if carpeting costs $18.00 per square yard?
A. $4752.00 B. $1584.00 C. $396.00 D. $528.00
Write an equation for the parabola.vertex: (-3, 4), directrix: y = 10
A. (y + 3)2 = 8(x - 4) B. (x + 3)2 = -24(y + 4) C. (x + 3)2 = -24(y - 4) D. (y + 3)2 = -24(x - 4)
Use the Quotient Rule to simplify. All variables are nonzero.
A. -2x2y4 B. -2x2y3 C. x3y5 D. -2x3y5