Mrs. Lopez, a counselor at Round Rock High School, found that 18% of the students had a math class first period. If there are 800 students at the school, how many students are NOT in a math class for first period? A.656
B.782
C.144
D.718
AND NO LINKS OR I WILL REPORT YOU PLZ ​

Find the cosine function that is represented in the graph.

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)) =

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.