At a factory, the cost of making different numbers of toothbrushes is shown in the table below. COST OF TOOTHBRUSHES Number of 3 Toothbrushes Cost (dollars) 9 12 $4.50 $9.00 $13.50 $18.00 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? A

50-60=10

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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