What is the quadratic regression equation that fits these data? Number of
seconds
Height (in feet)
0
13
1
15
2
18
3
15
4
11
5
6
O A. y=-1.13x2 + 4.20x + 12.82
O B. y=-1.21x2 + 4.79x + 12.00
O C. y= 0.04x2 - 1.19x+ 10.99
O D. y=-1.15x2 + 4.20x+ 13.24

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)) =