Represent the vector in the form v = ai + bj whose magnitude and direction angle are given.
= 8; ? = 0°
A. v = -8j
B. v = 8i + 8j
C. v = 8j
D. v = 8i
Answer: D
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Find 
. Express the answer in standard form.z1 = 2(cos 120° + i sin 120°)z2 = 4(cos 60° + i sin 60°)
A. 
- 
i
B. 
+ 
i
C. 
+ 
i
D. 
- 
i
Give the domain and range of the relation.
A. domain: {4, 8, 12}; range: {5, 7, 13} B. None of these C. domain: {4, 7, 12}; range: {5, 8, 13} D. domain: {5, 8, 13}; range: {4, 7, 12}
Solve the problem.Jason bought rose plants and sunflower plants for his garden. Rose plants cost $7 each and sunflower plants cost $13 each. If Jason bought 
and 
, write an inequality to show the possible combinations of rose and sunflower plants he can buy. His spending limit is $240.a) Write an inequality to describe the situation.b) Graph the inequality.
A. 7x + 13y ? 240;
B. 7x + 13y ? 240;
C. 13x + 7y < 240;
D. 7x + 13y < 240;
Simplify.
A. 
B. 
C. 
D. 