A bit is a 0 or a 1. A bit string of length 9 is a sequence of 9 digits, all of which are either 0 and 1. (a) How many bit strings of length 9 are there?
(b) How many bit strings of length 9 or less are there?

Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104

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)) =

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?