Solve the system of equations by the substitution method.
A. 
B. {(1, -4)}
C. 
D. ?
Answer: C
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Solve the problem.A graph has twelve vertices-two vertices of degree 4, four vertices of degree 3, and six vertices of degree 2. The number of edges in the graph is
A. 16. B. 12. C. 14. D. 9. E. none of these
A tennis ball is dropped from a height of 15 ft. If the ball rebounds 
of its height on each bounce, how far will the ball travel before coming to rest?
??
A. 60 ft B. 75 ft C. 30 ft D. 15 ft E. 45 ft
If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.100x2 + 160x + 64
A. 4(5x - 4)2 B. 4(5x + 4)2 C. 4(25x + 16)2 D. 4(5x + 4)(5x - 4)
Solve the problem.The total price (including sales tax) of a VCR is $375.07. The sales tax rate is 6%. What is the purchase price of the VCR (the price before taxes are added)? Round your answer to the nearest cent.
A. $234.42 B. $350.53 C. $353.84 D. $357.21