Astronomers measure large distances in light-years. one light-year is the distance that light can travel in one year, or approximately 5.88 x 1012 miles. suppose a star is 1.23 x 102 light-years from earth. in scientific notation, approximately how many miles is it?

12.3 x 10^12
7.23 x 10^13
7.23 x 10^14
5.88 x 10^12

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Which of these triangle pairs can be mapped to each other using two reflections?

Someone answer asap 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)) =