Acircle has a radius of 10 yards. what is the circumference of the circle? (express your answer using π.) a. 5π yards b. 10π yards c. 20π yards d. 30π yards

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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)) =

Which expression shows the sum of the polynomials with like terms grouped together