Ricardo gathered income data from a small sample of people 18 years old or older. from the data he collected, ricardo was able to model income based on a person's a
years of college. his model approximates a person's income, in thousands of dollars, as the square root of the product of 200 and the sum of how much older, in years,
is and their number of years of college.
which equation represents ricardo's model of a person's income, where i represents income in thousands of dollars, a represents age in years, and y represents the mi

225/100 of last years cost. write each fraction as a decimal and as a percent

Answer this question! 30 points and brainliest! only if you know the answer.

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)) =