1/3x+1/4y=1,2x-30 what is the value of y

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.

What expression is equivalent to log3(x+4)

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.