Graph the function. f(x) = x2 - 2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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A ball is tossed upward and then falls to the ground. Its height after t seconds is given by the function 
. During the period the rock is falling, what can be said about 
?
?
A. is positive.
B. is negative.
C. is zero.
D. None of the above
Mathematics
Graph the function.f(x) = 2
A. 
B. 
C. 
D. 
Mathematics
Solve.x2 = 81
A. 40.5 B. -9, 9 C. -10, 10 D. 9
Mathematics
Simplify.(2x - 5y)2
A. 2x2 + 25y2 B. 2x2 - 20xy + 25y2 C. 4x2 - 20xy + 25y2 D. 4x2 + 25y2
Mathematics