Find the numbers at which f is continuous. At which numbers is f discontinuous?f(x) = -5x2 + 2x

A. continuous for all real numbers except x = 
B. continuous for all real numbers except x = -5
C. continuous for all real numbers
D. continuous for all real numbers except x = - 


Answer: C

Mathematics

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Evaluate. Simplify if possible.-  -  

A. - 
B. -1
C. 1
D. - 

Mathematics

Find an equation for the graph.

A. y = -4 cos (2x)
B. y = 4 cos 
C. y = 4 cos (2x)
D. y = 4 sin (2x)

Mathematics

Evaluate the expression for the given values. If necessary, round to the nearest tenth.(x + 4y)2  x = 2, y = 2

A. 36 B. 100 C. 20 D. 10

Mathematics

Simplify. ÷  ÷ 9 ? 0

A. 0
B. 1
C. undefined
D.

Mathematics