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Alexa has an amazing sangria recipe that calls for red wine, orange juice, and various diced fruits. Her mixture includes 7 parts red wine to 2 parts orange juice. If she uses 21 parts of red wine, how much orange juice should she use? [a] If she uses 9 parts of orange juice, how much red wine should she use?  [b] If she wants to make 12 cups of sangria, how many cups of orange juice need to be used? Write your answer a mixed number (For example, 4 1/2 or 6 2/3). [c]

Identify the equivalent decimal and percentage values for the following common fractions. If there are more than three digits in the value, only include the first three numbers but round appropriately if necessary. 3/4: as a decimal [a] and a percent [b] 3/8; as a decimal [c] and a percent [d]

You are taking a test that has a total of 48 points. If you got 36 correct, what would your score be as a percent? [a] What is the fewest number of whole points you need to score at least a 93% on the test? [b]

72  is what percent of 160? [a] 75 is what percent of 60? [b] What number is 35% of 80? [c]

Urination depends on

Ventilation refers to the process by which

Which one of the following is a human blood type?

Cytotoxic T cells eliminate pathogens by

Which of the following is not required for TH or Tc cell activation?

All of the following are non-specific immunity EXCEPT ________.