Sabeena’s pen measures 144 millimeters long. Her pencil measures 18 centimeters long. How many centimeters longer is Sabeena’s pencil than her pen? Enter the correct answer in the box.

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Is the figure congruent? yes or no?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)