How are points graphed on a coordinate plane?

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project