Simplify.
A. 
B. 
C. 10x(x + 7)
D. 
Answer: D
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Find the standard equation of the indicated hyperbola.Vertices at (±8, 0), foci at (±10, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Solve the system, using Cramer's rule, if possible. 8x - y - 2z = -2-2x + 6y - 2z = 16 2x - 4y + z = -11
A. ? B. {(1, 3, 4)} C. {(-1, 4, 2)} D. {(1, 4, 3)}
Provide an appropriate response.Solve the following system algebraically: 
Fill in the blank(s) with the appropriate word(s).
Use an equation to solve the problem.Elaine had 5 buttons and her grandmother donated 5 cards of buttons to the collection. Elaine sorted the buttons into 5 piles, putting 8 buttons in each pile. How many buttons were on each card from Elaine's grandmother?
A. 3 buttons B. 33 buttons C. 7 buttons D. 36 buttons