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