Step-by-step explanation:
x2-5x+18*2-5x+18
we group like teams
x2-5x-5x+18+18*2
-8x+18+36
-8x+54
So if the tree in the backyard is 7/8 meters tall and its been growing for 2 1/5 years, divide 7/8 by 11/5 which will equal 35/88. So its been growing appriximately 0.4 meters per year.
14/16= .875 the answer is 87.5%
One way of estimating is to Round the numbers to the nearest whole number.
Hope this helps!