100 POINTS HURRY I HAVE TO GO SOON

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain