Bobby draws an artwork measuring 2.25 inches by 2 inches. He makes a copy of the artwork, enlarging it so that its dimensions are now 3.15 inches by 2.8 inches. What scale factor did he use to create the copy of the original artwork? Write your answer as a decimal.(1 point)
To find the scale factor, we can divide the dimensions of the enlarged artwork by the dimensions of the original artwork:
Scale factor = (3.15 inches / 2.25 inches) = 1.4
Scale factor = (2.8 inches / 2 inches) = 1.4
The scale factor is 1.4 (rounded to one decimal place).