A salesperson earns $200 a week plus a 4% commission on her sales. Which equation models the relationship between her sales in a given week, s, and her weekly earnings, e? e = 200s + 4 e = 4s + 200.

Of the 168 hours in a week as a full time student you should spend how many hours per week on school work?

Sat no calculator section question in the picture

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?