West Middle School has classes of many different sizes during first period. The number of students in each class is shown. 9,23,18,14,20,26,14,18,18,12,8,13,2 1,22,28,10,7,19,24,20.

a. Hank made a histogram using intervals 6-10, 11-15, and so on. How many bars did his histogram have? What was the height of the highest bar?

b. Lisa made a histogram using intervals of 6-10,11-15, and so on. How many bars did her histogram have? What was the height of the highest bar?

c. Besides a histogram, what are some other ways you could display these data?

X+ y = k 2x + 3y = k + 1 the point of intersection of the lines has an x-coordinate of a.2k + 1 b.-2k + 1 c.2k - 1

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)) =

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?