Pls help I really need help solving this

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?