Dan has x dollars. Frank has 7 times as much as Dan. Luke has 2 dollars fewer than Frank. How much do they have in all?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i