Which of the equations are true identities? A. (3x – 2y)(2y – 3x) = 9x2 – 4y2
B. (2k +5r)(2k – 5r) = 4k2 – 25r2
Choose 1
only A
only B
both A and B
Neither A nor B

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

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)) =