Find all solutions of the equation. Leave answers in trigonometric form.x2 - i = 0
A. {cis 45°, cis 225°}
B. {cis 315°, cis 135°}
C. {cis 270°, cis 90°}
D. {cis 180°, cis 0°}
Answer: A
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 2i + 2j - k, v = -i + k
A. 9; 
i - 
j + 
k
B. 3; 
i - 
j + 
k
C. 9; 
i + 
j - 
k
D. 3; 
i + 
j - 
k
Determine whether the number is prime, composite, or neither.1
A. Prime B. Composite C. Neither
Provide an appropriate response.Pat's Deli makes onion buns that cost $.48 each. 10 percent of the onion buns will spoil and be thrown away. Pat wants a 40 percent markup based on cost. Pat produces 800 onion buns. Each onion bun should sell for:
A. $0.75 B. $0.69 C. $0.80 D. $0.86
Solve the problem.Sue drove her car 222 miles in January, 303 miles in February, and 200 miles in March. If her average mileage for the four months from January to April is to be at least 249 miles, how many miles must she drive in April?
A. at least 244 miles B. at most 271 miles C. at most 249 miles D. at least 271 miles