I need help solving this question

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

(x-5)1/2+5=2 what is a possible solution?

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.