(with solutions pls ) 1.) the mean of a, b, and c is 0.4. the mean of a, b, c, and d is 0.325. find the values of d 2.)the mean of p, q, and r is 72. the mean of p, q, r, s, and t is 70.8. find the value of s + t 3.) joseph's mean score in 10 tests is 74. what is his total score in these total 10 tests? 4.) the mean of 3, x, x, 4, and 7 is 6. find the value of x 5.) given x is a positive integer. if the median of the set of numbers: 2, 3, 6, x, and x + 2, is 3, find the possible values of x

Determine whether the angles in each given pair are coterminal. 744°, -336°

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Someone answer asap 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)) =