Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).-2
A. 2(cos 90° + i sin 90°)
B. 2(cos 0° + i sin 0°)
C. 2(cos 270° + i sin 270°)
D. 2(cos 180° + i sin 180°)
Answer: D
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Given f(x) and g(x), find 
.f(x) = x2 - 3x - 28 and g(x) = x - 7
A. 
= x - 4
B. 
= x2 + 4
C. 
= x + 4 + 
D. 
= x + 4
Which property or identity justifies the statement?
+ 
= 
+ 
A. Associative Property B. Commutative Property C. Addition Property D. Additive Identity
Answer the question.Suppose polygon ABCD is any square with diagonals 
and 
intersecting at point F.
What is the measure of angle BFC?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Jo and Nancy use a metal alloy that is 22% copper to make jewelry. How many ounces of a 18% alloy must be mixed with a 28% alloy to form 90 ounces of the desired alloy?
A. 56 ounces B. 36 ounces C. 41 ounces D. 54 ounces