Answer:
It is 7.5%.
Step-by-step explanation:
15 x
200 100
1500/200 = 7.5
(x-2) + (x-1) + x + (x+1) + (x-2) + (x+3) = 447
6x + 3 = 447
6x = 447 - 3
6x = 444
x = 444/6
x = 74
The terms of this expression would be 8x,-20y, and -10. The coefficients are the numbers in front of the variable so they would be 8 and 20 because they are accompanied by a variable.
first most important effect is the erosion and the second most important effect is weathering.