Fifty- three students from 32 different schools signed up for a multi-classroom project. about how many students signed up for the project?
a. about 2000 students
b. about 1,800 students
c. about 1,600 students
d. about 1,500 students

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.