Hello <span>Sydney2640 </span><span>
Answer: To specify grouping and sorting for a report, click the group-and-sort button on the design tab in layout view.
Hope this helps
-Chris</span>
        
             
        
        
        
Answer:
A
Explanation:
because when you make a presentation so you are already use technology
 
        
             
        
        
        
The most appropriate answer is C !! software os used for using hardware !!
        
             
        
        
        
Your question wasn't very clear, but I think I understand what you want. Additionally, you should really state what language you're working with. Here it is in C#, and shouldn't be too much of a hassle to translate in to other languages.
Console.Write("Enter payment: ");
float payment;
if (float.TryParse(Console.ReadLine(), out payment))
    Console.WriteLine((Math.Floor(payment * 100) / 100) * 0.15, + " at 15% tip.");
else
    Console.WriteLine("Invalid input.");