A book collector has 525 books, 72% of which were published prior to 1900.
How many books were published prior to 1900?

꧅

Step-by-step explanation:

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)