Given the graph of f, find any values of x at which f ' is not defined.
A. x = -2, 0, 2
B. x = -3, 3
C. x = -3, 0, 3
D. x = -2, 2
Answer: D
Mathematics
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A metal bar is heated and then placed on a workbench for bending. The temperature B, in degrees Fahrenheit, t minutes after heat is applied is given by
.
?
The bar can be worked so long as its temperature is higher than 440 degrees. For what values of t is the bar suitable for working? Round your answer to two decimal places.
?
A. 
minutes
B. 
minutes
C. 
minutes
D. 
minutes
Mathematics
Rewrite as a percent.1.73
A. 273% B. 1730% C. 2230% D. 173%
Mathematics
Add or subtract.(3x2 + 7x - 9) + (3x2 - 9x + 12)
A. 6x2 + 2x + 3 B. 6x2 - 2x + 3 C. 6x2 - 16x + 3 D. 6x2 - 2x + 21
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
- 
A. 0
B. -1
C. - 
D. -3
Mathematics