The metal in a penny is worth about 0.505 cents. how many cents is this written as a fraction in simplest form?

How many grams the dog will eat in 3 days?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?