Which of the equations or inequalities represents a function?I. 
II. 
III. 
IV. 
A. I & III
B. II & IV
C. I & II
D. II & III
E. none of these
Answer: B
Mathematics
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Find the value of d2y/dx2 at the point defined by the given value of t.x = 
, y = - t, t = 22
A. - 
B. 
C. -2
D. 10
Mathematics
Solve the equation.(x - 5)2 + x2 = (x + 5)2
A. {-20} B. {0, -20} C. {0, 20} D. {20}
Mathematics
Use the power rules for exponents to simplify the expression. Write the answer in exponential form.
2
A. t8 B. 4t2 C. 2t4 D. t6
Mathematics
Solve.Find 27 subtracted from 91.
A. 74 B. 62 C. 118 D. 64
Mathematics