Find the maximum y-value on the graph of y = f(x).f(x) = 8x - x2
A. -8
B. -4
C. 16
D. 4
Answer: C
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Simplify the expression. Assume that variables represent nonzero numbers.
2
A. 
B. 
C. x2y2
D. 
Find the equation of the tangent line to the curve when x has the given value.f(x) = 
; x = 4
A. y = -7x - 9
B. y = -7x + 28
C. y = 
+ 1
D. y = 
- 
Find the zeros of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = 3x2 - x3
A. x = 0, touches the x-axis and turns around;
x = 3, crosses the x-axis
B. x = 0, touches the x-axis and turns around;
x = 
, crosses the x-axis;
x = -
, crosses the x-axis
C. x = 0, crosses the x-axis;
x = 
, crosses the x-axis;
x = -
, crosses the x-axis
D. x = 0, touches the x-axis and turns around;
x = 3, touches the x-axis and turns around
Evaluate the expression without using a calculator.log327
A. 1
B. 
C. 9
D. 3