Find a formula for f 1(x). Identify the domain and range of f 1. f(x)=7x-151 Find a formula for f (x). f 1 (x) = X 15 7 7 (Simplify your answer. Use integers or fractions for any numbers in the expression.) Identify the domain of f 1. Select the correct choice below and fill in any answer boxes within your choice OA. D= {} (Type an integer or a simplified fraction. Use a comma to separate answers as needed.) OB. D= {x} (Type an inequality. Simplify your answer. Use integers or fractions for any numbers in the express OC. The domain is all real numbers.