Solve the equation.
+ 
= 4
A. -2
B. 2, -2
C. 
, -2
D. 0
Answer: A
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Find the smallest value of N that will make the inequality hold for all n > N.
< 10-2
A. 71 B. 73 C. 66 D. 69
Solve the problem.Roberto invested some money at 6%, and then invested $3000 more than twice this amount at 10%. His total annual income from the two investments was $3160. How much was invested at 10%?
A. $2500 B. $22,000 C. $25,000 D. $9000
Add the polynomials.(4x2 - 4x - 1) + (6x2 - 4x + 4)
A. 10x4 - 8x2 + 3 B. 10x2 - 8x + 3 C. 24x2 - 4x + 3 D. 10x2 - 4x + 3
Of 50 students selected at random at a school, 15 said they preferred their hamburgers plain. How many of the 1500 students enrolled in the school would you expect to prefer their hamburgers plain?
A) 520 students B) 450 students C) 425 students D) 625 students E) 550 students