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26.  A 16-year-old male presents to the emergency department with sudden onset of severe left testicular pain that began 2 hours ago while at rest. He is nauseated and has vomited once. On physical exam, the left testicle is swollen, elevated, and very tender. The cremasteric reflex is absent on the affected side. What is the most likely diagnosis and best next step in management?

15. A 28 YO female patient is seen for f/u of a UTI on day 3 of Bactrim DS (TMP/SX) 160/80mg twice daily.  She continues to report dysuria with urinary frequency and small frequent urination. The UA and culture from her initial visit reveals trace blood but no growth of bacteria. The best working diagnosis is: 

Write a linear system of equations that represents the following scenario. Jenny buys 3 sheep (s), 4 dogs (d), 3 hens (h), and 5 rabbits (r) for 1106 coins in a game. Malachi buys 3 sheep, 3 dogs, 2 hens, and 2 rabbits for 880 coins. Kipton spends 1152 coins on 4 sheep, 1 dog, 8 hens, and 4 rabbits, and his friend Benny spends 1408 coins for 5 sheep, 3 dogs, 5 hens, and 1 rabbit. Write one equation per blank.

Consider the three EROs. Perform the operations by hand and write the answer in matrix form. GIVEN:       Blank 1: Give the numbers in ROW 2 when  R1↔R2{“version”:”1.1″,”math”:”R1↔R2″} Blank 2: Give the numbers in ROW 2 when -6R2→R2{“version”:”1.1″,”math”:”-6R2→R2″} Blank 3: Give the numbers in ROW 1 when R1+R2→R1{“version”:”1.1″,”math”:”R1+R2→R1″}

Explain the differences in rules when adding versus multiplying matrices.

Use the Gauss-Jordan to solve the following system of equations. Use reduced fractions only. Blank 1: How many solutions are there to this system? Blank 2: Give the solutions in terms of z, where z is any real number, as an ordered triple.

If the supply function is S(x) = 4x + 20 and the demand function is D(x) = 100 – 3x, what is the equilibrium quantity?

Which statement best describes matrix ?

What is a breakeven point and what is it used to determine?

Addison opens up a coffee cart outside of the Academic Building. It costs her $0.77 to make a cup of coffee and she spent $375 to buy the equipment and do some advertising. She plans to charge $2 per cup of coffee. Blank 1: What is the cost equation, C(x)?     Blank 2: What is the revenue function, R(x)?     Blank 3: What is the profit function, P(x)?   Blank 4: What is Addison’s profit if 500 cups are sold in the first week?