Find all the roots of the function. Use preliminary analysis and graphing to determine good initial approximations. Round to six decimal places.f(x) = cos 2x - 
+ 3
A. x ? -4.190947, 1.190947
B. x ? -2.801947, 2.579947
C. x ? -2.690947, 2.690947
D. x ? -2.579947, 2.801947
Answer: C
Mathematics
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Graph the function.f(x) = 2x + 2
A. 
B. 
C. 
D. 
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