Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = -3x2 
A. 
B. 
C. 
D. 
Answer: C
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A population changes with time. Its level after t years is given by the function 
. Over a certain period, the population is growing. What can be said about 
over this period?
?
A. is positive.
B. is negative.
C. is zero.
D. is linear.
Solve the problem.An arch for a bridge over a highway is in the form of a semiellipse. The top of the arch is 35 feet above ground (the major axis). What should the span of the bridge be (the length of its minor axis) if the height 32 feet from the center is to be 11 feet above ground?
A. 33.71 feet B. 54.31 feet C. 67.42 feet D. 203.64 feet
Solve using elimination.
A. x = 6, y = -7; x = 6, y = 7 or (6, -7), (6, 7) B. x = 6, y = 7; x = 7, y = 6; x = -6, y = -7; x = -7, y = -6 or (6, 7), (7, -6), (-6, -7), (-7, -6) C. x = -6, y = -7; x = -7, y = -6 or (-6, -7), (-7, -6) D. x = 6, y = 7; x = -6, y = 7; x = 6, y = -7; x = -6, y = -7 or (6, 7), (-6, 7), (6, -7), (-6, -7)
Write the expression in the standard form a + bi.
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
- 
i