I need to know the answer for reasons.

It takes a night security officer 20 mins to check each of the doors in an office building to make sure they are locked. What is the officers rate of work?

In 1967, a 30-second Super Bowl commercial cost $40,099. In 2000, a 30-Second commercial cost $1,800,000. What was the percent of change in the cost of a commercial? show your work on how you got the answer

Which of the following is a statistical question? A. How far does Christina live from her school? B. What percent of students in each class like sandwiches? C. How many hours did Ryan study today? D. What time is the art class?

What is 2 (x+8) in verbal expression

Assume that blood pressure readings are normally distributed with a mean of 115 and a standard deviation of 4.8. if 36 people are randomly selected, find the probability that their mean blood pressure will be less than 117.

How will adding the value 75 affect the mean and median of the data set 1, 5, 7, 9, 9, 10? A. The median increases and the mean stays the same. B. The mean increases and the median stays the same. C. The median increases less than the mean increases.

54,36,24 whats the next term in the geometric sequence

The price of a bike at Store A is 5656 the price xx (in dollars) at Store B. The price at Store A is $150.60$150.60. Write and solve an equation to find how much you save by buying the bike at Store A.

If y = 4when x = 10 find y when x=2

A sphere has a surface area of 9,244 square feet. What is the radius of the sphere? Round to the nearest hundredth.