Find different polar coordinates (r, ?) for the same point under the given conditions.
, r > 0 and 2? < ? < 4?
A. 
B. 
C. 
D. 
Answer: C
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Determine which numbers in the set are irrational numbers.
6.111..., 
, 0, 
, 
, -8.050550555..., -9?
A. 
, 0, 
, 
, -9?
B. 6.111..., 
, 
, 
, -8.050550555..., -9?
C. 
, 
, -8.050550555..., -9?
D. 
, 
, -9?
E. 
, 
, 
, -9?
Convert as indicated. When necessary, round to the nearest tenth of a degree.For the production of a special product a substance must be heated to 810° F. Find this temperature in degrees Celsius.
A. 1490° C B. 1464.4° C C. 446.4° C D. 432.2° C
Bob wants to find the best buy on laundry soap. Brand A costs $5.97 for 37 ounces. He has a coupon for $0.50 off the regular price of Brand B, which costs $7.13 for 50 ounces. Brand C costs $5.19 for 31 ounces. Which of these is the best buy?
a. Brand B b. Brand C c. Brand A d. Brand B and Brand A cost the same per ounce
Write a system of linear inequalities that has the given graph.
A. 
B. 
C. 
D. 