My Exercises

Today, I studied in my english lesson about the presentations.I learned how to use by and to in phrases describing graphs.
For example:
Last year, I wasn't well-paid. Last year, my salary was $650,00, but actually, my salary is $1054, so my salary increased to $404,00 or my salary increased by 1054,00.
We use to when are real number and use by when amount or degree of change.