Which angles are linear pairs? Check all that apply. ∠SRT and ∠TRV
∠SRT and ∠TRU
∠VRW and ∠WRS
∠VRU and ∠URS
∠URW and ∠WRS

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.