7. prove that the following are equivalence relations, and describe the distinct equivalence classes (short descriptions, no longer than 1-2 lines) (a) the relation r defined on z: vm, nez, m rn3 (m2- n2) (b) the relation p defined on r r: (w. x), (y, z) e r r, (w. x) p (y, z) w y

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality