Solve the inequality. Give the solution set in both interval and graph forms.
t ? - 48
A. [-64, ?)
B. [64, ?)
C. (-?, 64]
D. (-?, -64]
Answer: A
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Solve.Allan's 4 quiz scores in his math class are 88, 88, 82, and 78. What score does he need to obtain on his exam to average an 85 if an exam counts as much as two quizzes?
A. 87 B. 82 C. 69 D. 89
Write the ratio in lowest terms.8
tons to 8
tons
A. 
B. 
C. 
D. 
Factor the trinomial, or state that the trinomial is prime.2x2 - 7x - 15
A. (2x + 3)(x - 5) B. (2x - 3)(x + 5) C. (2x - 5)(x + 3) D. prime
Solve the problem.The concentration of a drug in the bloodstream, measured in milligrams per liter, can be modeled by the function, 
where t is the number of minutes after injection of the drug. When will the drug be at its highest concentration? Approximate your answer rounded to two decimal places.
A. at the time of injection B. t = 4 minutes after the injection is given C. t = 0.55 minutes after the injection is given D. t = 3.65 minutes after the injection is given