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Mathematics, 13.01.2021 02:50 mgnbrnne
A teacher asks a student to write and solve an inequality to find what numbers satisfy the statement
that 3.2 more than 7 times a number, n, lis less than 17.2. The table shows the student's work. Which
statement
true?
Step
Work
1
7n +3.2 < 17.2
2
7n< 14
3
n<7
O A) The student's work in all of the steps is correct because all numbers less than 7 satisfy the
statement
O B) The student made a mistake writing the inequality before Step 1. The correct inequality that
represents the statement is 3.2n + 7 <17.2.
O C) The student made a mistake between Step 1 and Step 2 by subtracting 3.2 from both sides
of the inequality instead of adding 3.2 to both sides of the inequality
OD) The student made a mistake between Step 2 and Step 3 by subtracting 7 from the right side
of the inequality instead of dividing both sides of the inequality by 7.
Jo
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