A biologist finds a young wild elephant which has a mass an adult?
about 3,000 kilograms (kg). This young elephant has about 75% of the mass it will have as an adult. What is the expected mass of the elephant when it is an adult?

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