Solve the system by the substitution method.y = 3x2 + 6x
A. (2, 0), (3, 45)
B. (1, 9), (-6, 72)
C. (-2, 0), (-3, 9)
D. (2, 0), (-3, 9)
Answer: B
Mathematics
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Find the polar coordinates, 
and 
, of the point given in Cartesian coordinates.(2, -2)
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Working together, Rick and Juanita can complete a job in 6 hours. It would take Rick 9 hours longer than Juanita to do the job alone. How long would it take Juanita alone?
A. 6 hr B. 15 hr C. 3 hr D. 9 hr
Mathematics
Express the transform of the given expression in terms of s and ?
.-5y" - y' + y, f 
= 1, f' 
= 0
A. 
?
+ 1
B. 
?
+ 5s
C. 
?
+ 5s + 1
D. 
?
+ 5s + 1
Mathematics
Find the directrices of the ellipse.
+ 
= 1
A. y = ± 
B. y = -8 ± 
C. x = 8 ± 
D. y = -8 ± 
Mathematics