What is the domain and range of f(x)=4-x

Domain: Positive or Negative numbers
Range: 0
 

Domain is the numbers you can use for x
range is the numbers you get from inputing x

so we see that there aren't any values of x that make undefined things like division by 0 or square roots of negative numbers

so domain is all real numbers

we have a linear equation, so then it would be that the range is also all real numbers

domain is all real numbers
range is all real numbers

Here’s the answer. you’re supposed to use 2900 times the interest rate and then add your original amount of money. now you get 2997.15