Which of these examples best represents a simple random sample? a.)
Picking out the names of every 10th person from a group of 200 people who drive a car.

b.)
Using a name generator to pick out 20 names from a group of 100 students.

c.)
Selecting every 15th person in a group of 100 volunteers.

d.)
Selecting all the students in a group of 50 students.

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

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)) =

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)