Can y’all help me...I’m sad bc today in math class I had a C and it dropped to an F and then we on Christmas break rn and I had to do all my assignments then my parents kept yelling at me saying to your work and today I had to go to a birthday party and now I can’t go bc I gotta do my work and that made my friend cancel the whole entire thing

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

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)) =

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9