Find the open interval(s) where the function is changing as requested.Increasing; y = 
A. (-?, 0)
B. (0, ?)
C. (-1, ?)
D. none
Answer: B
Mathematics
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Write the mathematical expression as a phrase.6(x - 2)
A. 6 times the difference between x and 2 B. 2 less than the product of 6 and x C. 6 times x, decreased by 2 D. 6 times the difference between 2 and x
Mathematics
Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse with foci at (4, -1) and (4, -7); major axis length of 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify the expression. Assume that all variables are positive.
A. 
B. xy7
C. 
D. 
Mathematics
Solve the equation using the quadratic formula.x2 + 2x - 15 = 0
A. {-5, 1} B. {-5, 3} C. {5, 3} D. {-3, 5}
Mathematics