Zachary inspects staplers at the factory. last month. he inspected 3,000 staplers at random and found that 12 did not work properly. the factory manufactures 15,000 staplers each month. based on the sample, how many staplers could not be expected to work properly each month?

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