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 ..

7.(03.01 lc)which set represents the range of the function shown? {(-1, 5), (2,8), (5, 3), 13, -4)} (5 points){-1, 2, 5, 13){(5, -1), (8, 2), (3,5), (-4, 13)){-4, 3, 5, 8}{-4, -1, 2, 3, 5, 5, 8, 13}

What is the difference between the equations of a vertical and a horizontal line?

He graph of f(x) = |x| is stretched by a factor of 0.3 and translated down 4 units. which statement about the domain and range of each function is correct? the range of the transformed function and the parent function are both all real numbers greater than or equal to 4. the domain of the transformed function is all real numbers and is, therefore, different from that of the parent function. the range of the transformed function is all real numbers greater than or equal to 0 and is, therefore, different from that of the parent function. the domain of the transformed function and the parent function are both all real numbers.