10 times as much as 130 is 1300
The average = 1/2 (sum of the two bases) = 1/2 ( 16.8 + 6.9) = 11.85 yards
(3x2 + 9x + 6) − (8x2 + 3x − 10) + (2x + 4)(3x − 7)
First distribute the (2x+4)(3x-7) to get 6x2-2x-28
After this just add the like terms for all parts of the expression.
(3x2-8x2+6x2)+(9x-3x-2x)+(6+10-28)
x2+4x-12
So you answer is x2+4x-12
31/7 = 4 3/7.....3/7 is less then 1/2....so the closest integer is 4