abbey wants to hire a caterer for a school lunch. It costs $250 to have a lunch for 20 people, and $350 to have a lunch for 40 people. What is the rate of change?

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4