TASK. The following data set shows time (in minutes) that Leng and Long did their exercise in 5 days. Use the worksheet on page 204 in answering. Long 45 36 40 56 33 Leng 41 45 39 42 43
a. WhatisthemeanofLong’sexercisetime?H owaboutthatofLeng?
b. ’sexercisetime?
c. What is the standard deviation of Leng’s exercise time?
d. ?

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth