The average annual salary for all u. s. teachers is $47,750. assume that the distribution is normal and the standard deviation is $5680. find the probability that a randomly selected teacher earns a. between $35,000 and $45,000 a year b. more than $40,000 a year c. if you were applying for a teaching position and were offered $31,000 a year, how would you feel (based on this information)?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

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)) =

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2