.9 divided by 911 rounded to the nearest whole number

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.

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

What are the domain and range of the function f(x)=2^x+1