*use for question 4-6 *
the expression 16t2 models the distance in feet that an object falls during t seconds after being dropped. find the distance an object falls during each time.
4) .25 sec 5) .5 sec 6) 2 sec
need

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

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.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school