What is the image of (-1,9) after a dilation by a scale factor of 2 centered at the
origin?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Bocephus has a bag full of nickels and dimes. if there are 3 times as many dimes as nickels, and he has $\$36.05$ in his bag, how many nickels does he have?