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At a factory, the cost of making different numbers of toothbrushes is shown in the table below.
A linear function models the cost based on the number of toothbrushes made. Which statement about the rate of change of this function is true?
The cost increases by $1.50 for each additional toothbrush made.
The cost increases by $1.50 for each additional toothbrush made.
The cost increases by $4.50 for each additional toothbrush made.
The cost increases by $4.50 for each additional toothbrush made.
The cost increases by $9.00 for each additional 3 toothbrushes made.
The cost increases by $9.00 for each additional 3 toothbrushes made.
The cost increases by $18.00 for each additional 3 toothbrushes made.
Sagot :
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