In a high school, 7% of the students play the piano. this is 21 students. choose the expressions that complete each step involved in setting up and solving the proportion that represents the situation. can someone answer this? i'm pretty

The only way to identify an intercept is as an ordered pair. true false

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)) =

Explain how you could use the interactive table to tell if sets of points are on the same line. math 8