Use interval notation to describe the set of numbers.Every item in Albert's Variety store costs less than $3.12.
A. [1, 3.12)
B. [0, 3.12)
C. [0, 3.12]
D. [1, 3.12]
Answer: B
Mathematics
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Simplify the expression.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Round to one decimal place if needed.If a tree 42.5 feet tall casts a shadow that is 17 feet long, find the height of a tree casting a shadow that is 9 feet long.
A. 34.5 ft B. 80.3 ft C. 3.6 ft D. 22.5 ft
Mathematics
Write the complex number in trigonometric form. Begin by sketching the graph to help find the argument ?.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
The following double-bar graph illustrates the revenue for a company for the four quarters of the year for two different years. Use the graph to answer the question. 
In what quarter was the revenue the least for 2009?
A. first quarter B. third quarter C. fourth quarter D. second quarter
Mathematics