The equation x2 + y2 + 10x + 8y = b describes a circle. If the radius of the circle is 7 units, what is the value of b in the equation above?

over the argument its not good to fight.

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.

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!