Enter an equation that can be used to solve this problem, where x represents the number of hours that the first plane had been traveling.
two planes left the same airport traveling in opposite directions. the first plane left the airport at 2 p. m. traveling at an average rate of 500 mph. the second plane left the airport at 4 p. m. traveling at an average rate of 550 mph. when will the planes be 3100 miles apart?
enter the amount hours, after the first plane left, when the planes will be 3100 miles apart.
equation:
hours:

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)) =