Question
Model with Mathematics Mr. Chung teaches a 1 -hour
math class. Six minutes are used for attendance and turning in home
Then he teaches for 18 minutes. For the rest of the class, the student
work on problems. For each problem, the students spend 3 minutes
working on it, then Mr. Chung takes 6 minutes to explain it. After th
completes 4 problems, all of the class time is used up. Write and eva
an expression to show this.
math class. Six minutes are used for attendance and turning in home
Then he teaches for 18 minutes. For the rest of the class, the student
work on problems. For each problem, the students spend 3 minutes
working on it, then Mr. Chung takes 6 minutes to explain it. After th
completes 4 problems, all of the class time is used up. Write and eva
an expression to show this.
Ask by Campbell Cox. in the United States
Jan 13,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
Total time = 6 minutes (attendance) + 18 minutes (teaching) + 4 × (3 minutes + 6 minutes) = 60 minutes
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Mr. Chung has a total of 60 minutes for his class. After taking 6 minutes for attendance and 18 minutes of teaching, he is left with 60 - 6 - 18 = 36 minutes. The students tackle 4 problems, spending 3 minutes on each problem, totaling 4 x 3 = 12 minutes. Mr. Chung then explains each problem for 6 minutes, adding up to 4 x 6 = 24 minutes. When you sum those together—12 minutes working and 24 minutes explaining—you get 12 + 24 = 36 minutes, which perfectly utilizes the remaining class time!
To represent this as an expression:
Let “x” be the number of problems. The time spent would then be: 3x (student work) + 6x (Mr. Chung’s explanations) = 36 minutes. Hence, the expression is 9x = 36, leading us to x = 4, confirming that the students worked on 4 problems.
Let “x” be the number of problems. The time spent would then be: 3x (student work) + 6x (Mr. Chung’s explanations) = 36 minutes. Hence, the expression is 9x = 36, leading us to x = 4, confirming that the students worked on 4 problems.