If (x+1)(y+1) ≠0, y=1/x+1, and z=1/y+1, which of the following is equivalent to z in terms of x?
A. 1
B. x + 1
C. x + 2
D. (x + 1)/(x + 2)
E. (x + 2)/(x + 1)
If x+y=24 and 2x−7y=15, which of the following is equal to 13?
A. x−y
B. x+y
C. x−2y
D. 2x+y
E. 2x− y
If x is an integer and y = –3x + 7, what is the least value of x for which y is less than 1?
(A) 1(B) 2(C) 3(D) 4(E) 5
What is the sum of all solutions to the equation |x + 3| = 4 ?
A. -8B. -6C. 4D. 8E. 9
If x + y = 2 and x^2 + y^2 = 2, what is the value of xy ?
A. –2B. –1C. 0D. 1E. 2
In a certain box, the ratio of red marbles to blue marbles is 4 to 5, and the ratio of green to blue marbles is 2 to 3. What is the least number of marbles that could be present in the box?
A) 14B) 15C) 32D) 37E) 43
If 3x+y=−1 and y−2x=4, what is the value of x+2y?
A. − 5B. − 3
C. 0
D. 3
E. 5
If 2x + 5y =8 and 3x = 2y, what is the value of 2x + y?
A. 4B. 70/19C. 64/19D. 56/19E. 40/19
If 5x−3−2x+4=2(−x−7), what is the value of x ?
(A) -10(B) -8(C) -6(D) -3(E) 6
If x is negative and y is positive, what is the value of x given that x^2−8xy+16y^2=49
A. 4y − 49B. 49 − 4yC. −7 − 4yD. 7 + 4yE. 4y − 7
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