Desmond kept track of his results for all 75 rolls. The table at right shows some of his results. Based on his partial results, how many times did he roll a 5 or a 6?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

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?