Simplify by combining like terms.-9x2 + 9x3 + 3x - x2 + 7x - x3
A. 8x3 - 10x2 + 10x
B. 8x3 - 10x2 + 3 x
C. 9x3 - 9x2 + 10x
D. 9x3 - 9x2 + 10x - x3 - x2
Answer: A
Mathematics
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Find an equation for the ellipse.Center at (0, 0); focus at (0, -3); vertex at (0, 4)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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Convert as indicated.7 ml to deciliters
A. 0.7 dl B. 700 dl C. 70 dl D. 0.07 dl
Mathematics
Solve the equation.2x = 
A. 
B. {3}
C. {-3}
D. 
Mathematics
Solve the problem.An advertising agency has discovered that when the Holt Company spends x thousands of dollars on advertising, it results in a profit increase in thousands of dollars given by the function 
How much should the Holt Company spend on advertising to maximize the profit?
A. $63,000 B. $6000 C. $60,000 D. $8000
Mathematics