Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.
+ i
A. 4(cos 30° + i sin 30°)
B. 4(cos 60° + i sin 60°)
C. 2(cos 60° + i sin 60°)
D. 2(cos 30° + i sin 30°)
Answer: D
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Evaluate.12C7
A. 1,995,840 B. 792 C. 240 D. 95,040
Determine whether the given equation is a rational function.f(x) = 
A. Yes B. No
Complete the factorization.7m2 - 36m + 5 = (
- 1)(m - 
)
A. m, 5 B. 7m, 1 C. 7m, 5 D. 5m, 7
Solve the problem by using two equations with two variables.On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $6 each and a number of necklaces at $15 each. She wrote a check for $1080 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
A. 90 bracelets and 30 necklaces B. 80 bracelets and 40 necklaces C. 85 bracelets and 35 necklaces D. 75 bracelets and 45 necklaces