David is throwing a stone in the air at an angle from the ground with an initial velocity of 30 feet per second. The equation h= -10t ^2 + 40 t + 2 gives the height of the stone thrown. Find the maximum height of the stone.

What does x = in this equation x+3+2x=x+5

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

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.