The distance between earth and mars is 192,000,000km. it took a spacecraft 200 days to take a space buggy from earth to mars. calculate the speed at which the spacecraft traveled. give the unit.

Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?

Which system of linear inequalities is represented by the graph? !

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?