MediumMath· Algebra· Linear inequalities in one or two variables· MCQ
A certain elephant weighs 200 pounds at birth and gains more than 2 but less than 3 pounds per day during its first year. Which of the following inequalities represents all possible weights w, in pounds, for the elephant 365 days after birth?
A
B
C
D
Correct answer: D
Explanation
Choice D is correct. It’s given that the elephant weighs 200 pounds at birth and gains more than 2 pounds but less than 3 pounds per day during its first year. The inequality represents this situation, where d is the number of days after birth. Substituting 365 for d in the inequality gives , or .
Choice A is incorrect and may result from solving the inequality . Choice B is incorrect and may result from solving the inequality for a weight range of more than 1 pound but less than 2 pounds: . Choice C is incorrect and may result from calculating the possible weight gained by the elephant during the first year without adding the 200 pounds the elephant weighed at birth.
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id cb_question_bank:6bed8a1c-4d10-4875-8acf-55634514a991 · question 80da233d · IBN 028905-DC
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