x−5_I = 10 1 What is one possible solution to the given equation?
Correct answer: 15
(parsed from the explanation — this source omits an answer key
for this item)
Explanation
- - = The correct answer is 15 or 5. By the definition of absolute value, if x 5 10, - = - =- then x 5 10 or x 5 10. Adding 5 to both sides of the first equation yields = =- x 15. Adding 5 to both sides of the second equation yields x 5. Thus, the - given equation has two possible solutions, 15 and 5. Note that 15 and –5 are examples of ways to enter a correct answer.
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