Evaluate the expression without using a calculator.
1/2
A. 
B. 
C. 
D. 
Answer: B
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Solve. Give your answer as a mixed numeral.Ellen is knitting a scarf with one 2
-inch blue stripe, one 4
-inch green stripe, and one 1
-inch white stripe. How wide is the scarf?
A. 
in.
B. 2
in.
C. 8
in.
D. 
in.
Subtract.Subtract -7 from 2.
A. -5 B. -9 C. 9 D. 5
For each set described, write the set in roster form.The set of the days of the week starting with the letter S.
A. {Sunday} B. {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday} C. {Saturday} D. {Saturday, Sunday}
Solve the problem.The formula D = 6e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 2, the drug is to be given again. What is the time between injections?
A. 29.25 hr B. 17.33 hr C. 27.47 hr D. 44.79 hr