The half-life of sodium-22 is 2.6 years. a sample contains 800 mg of this isotope.

Which graph shows a function with a range of all real numbers greater than or equal to -1

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas 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