Need with a math problem
" at bobs detective agency, the cost of following someone is $249.00 but today is a special day, and he is offering a 40% discount to his best customers. what is the new cost of his service once the discount has been taken off? how much would the actual price be if there was 7% tax on top of the sale price? "
show work , i wont get good marks if it isn't shown ; ; last time posting, i want a real answer ..