It opens downward. It has an x-intercept at the point (5,0)
Its vertex is at the point (2, 18).
Which of the following is the equation of the parabola?

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.

i think the answer is c sorry if it's wrong