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