While David was solving the equation 100x + 300 = 500, he wondered if he could first change the equation to x + 3 = 5. What do you think? a. Solve both equations and verify that they have the same solution. b. What could you do to the equation 100x + 300 = 500 to change it into x + 3 = 5? This problem is a checkpoint for operations with rational numbers

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)) =

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent

See attachment below and find the equivalent of tan(∠qsr)