What does it mean when it is said that the variables x and y have no correlation?

as the value of x increases the value of y decreases.

the values of x and y are randomly scattered.

as the value of x increases the value of y increases.

as the value of x decreases the value of y decreases.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Find the solution of each of the following.