Simplify.1 - 2[3 - (7x + 5)]
A. -7x - 15
B. 14x + 5
C. -7x + 5
D. 14x - 15
Answer: B
Mathematics
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Which of the following is equivalent to the expression:? 
A.
?
x
B.
?
x
C.
?
x2
D.
?
x
E.
?
x
Mathematics
Solve the problem.The position of a body moving on a coordinate line is given by 
with s in meters and t in seconds. When, if ever, during the interval 
does the body change direction?
A. t = 6 sec B. no change in direction C. t = 12 sec D. t = 3 sec
Mathematics
Divide.
A. 20 B. 24 C. 20 R7 D. 20 R4
Mathematics
Solve the system. x - y + 2z = -3-4x + 4y - 8z = -3 x + 3y + z = 6
A. (0, 3, -3) B. (-3, 3, 0) C. (-3, 0, 3) D. No solution
Mathematics