Solve.A landscaper must order some topsoil for a job. Company X sells it for $54 per cubic yard plus a $135 delivery charge. Company Y sells it for $58 per cubic yard plus a $95 delivery charge. Set up and solve an equation to determine the number of cubic yards at which both suppliers would charge the same total amount.
A. 8 cu yd
B. 12 cu yd
C. 6 cu yd
D. 10 cu yd
Answer: D
Mathematics
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Sketch trajectories of solutions of z? = Az given the eigenvalues and associated eigenvectors of A. Classify the origin and assess its stability.
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Factor out the greatest common factor.3x2y5 + 18x2y4
A. x2y4(3y + 6) B. 3x4y2(y + 6) C. 3x2y4(y + 6) D. y + 6
Mathematics
Find a formula for the inverse of the function described below.A size 60 dress in Country C is size 10 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = 2x + 20 B. f-1(x) = 2(x + 20) C. f-1(x) = x + 20 D. f-1(x) = 2(x - 20)
Mathematics
Simplify the algebraic expression by collecting and combining like terms.8(3y2 + 9) - (10y2 - 4)
A. 34y2 + 5 B. 34y2 + 13 C. -14y2 + 68 D. 14y2 + 76
Mathematics