Write the expression in standard form.
A. 
B. 
i
C. 
+ 
i
D. 
- 
i
Answer: C
Mathematics
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If k is not zero, the graph of the power function 
is concave up.
Answer the following statement true (T) or false (F)
Mathematics
Decide whether the expression is or is not an identity.tan 
cos x + tan 
= sin x
A. Identity B. Not an identity
Mathematics
Determine whether the given ordered pair is a solution of the system.(-5, -4)2x = -14 - y4x = -28 - 2y
A. solution B. not a solution
Mathematics
Solve the problem.The profit that a vendor makes in a day by selling pretzels is given by the quadratic equation 
where P is the profit, in dollars, and x is the number of pretzels. Determine the number of pretzels that maximizes profits by finding 
A. 400 pretzels B. 100 pretzels C. 200 pretzels D. 800 pretzels
Mathematics