HELP ASAP

The tree is 6 feet tall and grows 15 feet so the first step would be to find out how much it grew.  Since 15-6=9 it grew 9 feet.  9 is 150% of 6 so the trees height increased by 150%.   If this is confusing or doesn't make sense feel free to ask a question!

so from 6 feet to 15 feet is 9 feet so we have 9/6 for the percent and 9/6=3/2=1.5=150% so it grew 150%