Aboat travels 9 km upstream and 9 km back. the time for the round trip is 5 hours. the speed of the stream is 2km/hr. what is the speed of the boat in still water?

If 25% of y is 30, what is 60% of y?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5