Simplify the expression.sin4x - cos4x + cos2x
A. 1
B. 0
C. sin2x
D. cos2x
Answer: C
Mathematics
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Solve.2
- 9 = 3
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The table shows the number of college students who prefer a given pizza topping.
Find the empirical probability that a randomly selected student prefers meat toppings.
A. 0.104 B. 0.330 C. 0.341 D. 0.317
Mathematics
Find a set of parametric equations for the rectangular equation.y = 
A. x = t2; y = 
, x ? 4
B. x = t; y = 
C. x = t + 1; y = 
D. x = (t - 1)2; y = 
, x ? 0
Mathematics
Evaluate the expression without the use of a calculator, and then verify your answer using a calculator.eln 12
A. ln 12 B. 12 C. e12 D. 11
Mathematics