Which choice could be modeled by a linear function? A. The amount, y, of radioactive material remaining after x years when decay occurs at a rate of 30% each year.
B. The amount of money, y, in an amount after x years earning 4% interest compounded annually.
C. The monthly cost, y, to use a cell phone for x minutes at a rate of 4 cents per minute.
D. The height, y, of a ball after bouncing x times, if each bounce reaches 2/3 the previous height.

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

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)) =