Identify the equation as either an identity or not.-2 cos 10x cos 4x = cos 7x cos 3x
A. Not an identity
B. Identity
Answer: A
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Integrate the function f over the given region.f(x, y) = 
over the region bounded by the x-axis, line 
and curve 
A. 9 B. 1 C. 8 D. 10
Determine all values that cause the expression to be undefined.
A. 0 B. -5 , 9 C. 5, -9 D. -45
Write a valid conclusion based on the statements.If it's not Saturday, then Dad will shave. If Dad has whiskers, then he did not shave. If it's Saturday, then Dad will take us to the game.
A. If Dad shaves, then it's not Saturday. B. If Dad takes us to the game, then he has whiskers. C. If Dad did not shave, then he has whiskers. D. If Dad has whiskers, then he will take us to the game.
Change the word phrase to an algebraic expression. Use x as the variable to represent the number.a number minus two hundred three
A. x - 203 B. x + 203 C. 203x D. 203