I think it would be 8-3, not 7. 8x - 2x + 5x = (8-5)x + 5x
Answer:

Step-by-step explanation:
You have the following quadratic equation given in the problem:

You must make the equation equal to zero, as following:

Add like terms:

Now, to factor the equation, you must find two numbers whose sum is -2 and whose product is -15. Therefore, you have:

Answer:
$229
Step-by-step explanation:
Pay check = P
so
Total spent movie T = $13.74
T = 0.4 *0.15* P = $13.74
The 40% on the Movie Theatre spending is part of the 15% spending at the mall.
So 40% of 15% of the Pay Check = $13.74
P = $13.74 / (0.4*0.15) = 34.35/0.15 = 229
If the 2 given points are endpoints, then we're in business. The formula for the midpoint is

. If the endpoints of our segment are the coordinates (1,2) and (12,14), our formula would be filled in as follows:

which simplifies to (13/2, 8). See? It's pretty simple once you know how to do it.