Find the values of x in the diagram below

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

Which equation is represented by the graph below?

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9