Find the range of the given function.f(x) = -4x + x2 + 9
A. [2, ?)
B. [5, ?)
C. [-2, ?)
D. (-?, 0]
Answer: B
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Solve the equation 
. Restrict your attention to the horizontal span of 0 to 20. Round your answer to two decimal places if necessary.
?
A. 2.44 B. 1.56 C. 3.76 D. 2.75
Use fractal geometry to determine the answer.Consider a square with edges of length five. Suppose that four of these squares are placed edge to edge to form a new larger square. What is the scale factor 
?
A. 1 B. 4 C. 2 D. 8
Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
local maximum; 
local minimum
B. 
local maximum; 
saddle point; 
saddle point; 
local minimum; 
local minimum
C. 
local maximum; 
local minimum; 
local minimum; 
local minimum; 
local minimum
D. 
local maximum; 
saddle point; 
saddle point; 
saddle point; 
local minimum; 
local minimum; 
saddle point; 
local minimum; 
local minimum
Solve using the substitution method. Use a graphing calculator to check your answer. x - 3y = 10x = y + 4
A. (-4, 2)
B. (1, -3)
C.
| No solution |
D. Infinitely many solutions