Mrs. Groen estimates that she will spend $120 at the grocery store. She actually spends $150. What is the percent error?

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

Which graph shows the solution to the system of linear inequalities? y-4t< 4 y