What is the approximate area of a circle with a radius of 13 cm?

a.) 40.8 cm^2

b.) 530.7 cm^2

c.) 784 cm^2

d.) 2461.8 cm^2

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.

Walter is to make cookies for a basketball tournament. he's made 15 cookies so far. his coach asked him to make at least 20 cookies but no more than 55. solve the inequality and interpret the solution. 20 ? x + 15 ? 55

The equation y equals 11 x represents the calories jake burns when cross country skiing, where x is time in minutes and why is the number of calories. the graph shows the calories he burns while playing basketball which activity burns at a faster rate? explain