(7th grade math question) Sales of the Xbox One increased from 10,000 to 18,500 in November. What was the percent increase?

A) 8.5%
B) 45.9%
C) 85%
D) 85.8%

please answer soon​

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Factor the polynomial. b^2 + 4b + 4