Excel IF function with multiple options

We need help with excel spreadsheet by creating a discount rate based on one given value. If a value is under 30, then the spreadsheet sets a certain discount rate, if the value is between 30 and 50, there is different discount rate, if the value is between 50 and 100, there is another discount rate, if between 100 and 200 - another and so on.

Basically its one formula that we need help with.