WHAT IS 9 x 99 x 999 x 9999 x 99999 x 999999 x 9999999 x 99999999 x 999999999 x 9999999999 >:)

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?

In a quadratic function of the form ax^2+bx+c, which of the following is not true? a. the y-intercept is c. b. if a is positive, the parabola opens up. c. the vertex has an x-coordinate of -b/2a. d. the axis of symmetry is the line y=-b/2a.