Factor by grouping.r3 + r2 + 2r + 2
A. (r2 + 1)(r + 2)
B. (r2 + 2)(r + 2)
C. (r2 + 2)(r - 2)
D. (r2 + 2)(r + 1)
Answer: D
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Evaluate the expressing using a unit circle or state that the quantity is undefined. All angles are in radians.sin 
A. - 
B. - 
C. 
D. 
Rewrite the statement using the if...then connective. Rearrange the wording or words as necessary.All children like stuffed toys.
A. If it is a child, then it likes stuffed toys. B. All children like stuffed toys. C. If it is not a stuffed toy, then children like it. D. If children like it, then it's a stuffed toy.
Provide an appropriate response.Suppose there are two candidates in a hypothetical U.S. Presidential election. Roberts wins 46,946,982 popular votes and 243 electoral votes, while Simpson wins 46,285,073 popular votes and 295 electoral votes. State who wins the popular vote and who becomes President. (Assume that all votes were cast for either Roberts or Simpson.)
A. Roberts wins the popular vote and becomes President. B. Simpson wins the popular vote and becomes President. C. Roberts wins the popular vote, but Simpson becomes President. D. Simpson wins the popular vote, but Roberts becomes President.
Perform the indicated operation. Write the result in standard form.(4 - 2i) + (-7 - 8i) - 8i
A. -11 - 18i B. 11 - 10i C. -3 + 18i D. -3 - 18i