A • 3 = -30 find the value of the variable

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.

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?