Q. Which of the following values are solutions to the inequality 7<x−8 ?I. 21II. 15III. 23NoneI onlyII onlyIII onlyI and III and IIIII and IIII, II and III
Understand the inequality: Understand the inequality.The inequality given is 7 < x - 8. This means we are looking for values of x that, when 8 is subtracted from them, are greater than 7.
Solve for x: Solve the inequality for x. Add 8 to both sides of the inequality to isolate x. 7 < x - 8 7 + 8 < x - 8 + 8 15 < x This means that any value of x that is greater than 15 is a solution to the inequality.
Check solutions: Check each of the given values to see if they are solutions to the inequality.I. 2121 > 15, so 21 is a solution.II. 1515 is not greater than 15, so 15 is not a solution.III. 2323 > 15, so 23 is a solution.
Determine correct choices: Determine which of the given choices correctly lists the solutions to the inequality.Since 21 and 23 are solutions, but 15 is not, the correct choice is "I and III".