Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
- 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the focus and the directrix of the parabola.y = x2 + 14x + 50
A. Focus: 
; directrix: y = 1
B. Focus: 
; directrix: y = 
C. Focus: 
; directrix: x = 1
D. Focus: (-7, 2); directrix: y = 0
Mathematics
Solve the inequality. Write the solution set using interval notation and graph it.-5y + 5 ? -4y + 1
A. (-?, -5]
B. (-5, ?)
C. (-?, 4]
D. [-4, ?)
Mathematics
Multiply and simplify. Assume all variables represent nonnegative real numbers. Write your answer in radical notation.
? 
A. 12m2 B. 7m C. 12 D. -2m
Mathematics
Solve the problem.Each of ten tickets is marked with a different number from 1 to 10 and put in a box. If you draw a ticket from the box, what is the probability that you will draw 3, 8, or 1?
A. 
B. 
C. 
D. 
Mathematics