200.000 rounded to the nearest tenth i'm 9 and still know this so if you don't you are not smart

Point a is located at (0, 4), and point c is located at (−3, 5). find the x value for the point b that is located one fourth the distance from point a to point c. −0.25 −0.5 −0.75 −1

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.

If 25% of y is 30, what is 60% of y?