The table shows a function. Is the function linear or nonlinear?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?