Simplify the expression.
A. cot x
B. csc x
C. tan x
D. sec x
Answer: D
Mathematics
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Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R
= 6xC
= 0.01x2 + 1.2x + 90.
A. 720 units B. 360 units C. 240 units D. 480 units
Mathematics
Solve and check the equation.6x - (5x - 1) = 2
A. 
B. 
C. 
D. 
Mathematics
Solve.
2 + 3 
+ 2 = 0
A. ±
, ±
B. ±
C. ±
, ±
D. 
, 
Mathematics
Solve the equation.49x3 - x = 0
A. 
B. 
, - 
, 0
C. 
, 0
D. - 
Mathematics