ANSWER ASAP GIVING BRAINIEST FIVE STAR AND HEART! THIS IS 6TH GRADE TECHNOLOGY!

Please answer the following essay question:
What is the difference between a function and a formula? List an example of each.
Answer in paragraph form using 5-7 complete sentences.

How to use order of operation in 20 divide by 4 multiply 5 = 1

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters