Final answer:
The scale factor from Jimmy's land to his sister's land is 2.
Step-by-step explanation:
To find the scale factor from Jimmy's land to his sister's land, we need to compare the dimensions of the two plots. Jimmy's land is 150ft by 100ft, while his sister's land is 75ft by 50ft. To calculate the scale factor, we can divide the dimensions of Jimmy's land by the dimensions of his sister's land.
Scale factor = (150ft / 75ft) = 2
Therefore, the scale factor from Jimmy's land to his sister's land is 2, which means that Jimmy's land is twice as large as his sister's land.