The answer is (1,-5), If you put those two on a graph, that point is where they collide.
Let the distance to his office be x, then
On monday, speed = x/20 miles per minutes = 3x miles per hour
On tuesday, speed = (3x + 15) miles per hour
Time = distance / speed
(20 - 6)/60 hours = x/(3x + 15) hours
7/30 = x/(3x + 15)
7(3x + 15) = 30x
21x + 105 = 30x
30x - 21x = 105
9x = 105
x = 105/9 = 11.7 miles
Therfore he travels an average of 11.7 miles to work.
divide it two numbers to get 11.090909 which would most likely to be 11.10
The answer is -403
The order of operations puts multiplication before subtraction. -1 x 372= -372, and -372-31= -403
It would be 6 haha I just took a test and got it right
