Can anyone solve this?

Which of the following graphs represents the function f(x) = 2^x

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

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.