Select all the correct answers. Which statements are true about the functions y = sin(1), y = cos(x), and y = tan(x)? Both y = sin(s) and y = tan(s) are increasing on the interval (0, 3), and y = cos(r) is decreasing on that interval. The domains of y = sin(), y = cos(x) and y tan(s) are all real numbers. The amplitudes of y = sin(). y = cos(x) and y = tan(x) are 1. The graphs of y = sin(s) and y = cos(x) do not have midlines. The periods of y = sin(x) and y = cos(r) are 27, and the period of y = tan(x)

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)) =

2x minus y equals 6, x plus y equals negative 3

Write the equation in general quadratic form: plz !