3. the average distance from the sun to the planet mercury is about 58,000,000 km. the diameter of a human hair is about 0.0025 cm.
(a) what is the distance from the sun to mercury written in scientific notation?
(b) what is the diameter of a human hair written in scientific notation?
(c) in comparing the measurements in parts (a) and (b), what else must be done before a comparison is made?

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =