The school math coach takes an inventory of math materials. He counts the materials for 5 different classes. Each class has 7 boxes of 10 pattern blocks, 6 boxes of 9 rulers, and 3 boxes of 2 calculators. Which expression shows the number of math materials?

T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))

Step-by-step explanation:

The following mathematical expression would calculate the total number of materials in all of the classes which would be represented by the variable T. We would first multiply the quantity of a specific material in a single box by the number of boxes that exist for each separate material and then multiply that number by 5 since there are a total of 5 classrooms and all have the same quantity of the same materials.

T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))

If we were to solve this we would see that there are a total of

T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))

T = 5 * (70 + 54 + 6)

T = 5 * 130

T = 650

650 materials

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