Answer: Length of new rectangle is 3 times bigger compare to the original.
Step-by-step explanation:
Let x be length of the original rectangle
If Clarissa used a scale factor of 3 to draw anew rectangle then
Length of new rectangle=3 times the length of original rectangle
Therefore, 3 times the length of original rectangle= 3x
Thus, length of new rectangle is 3 times bigger than the length of original rectangle.