A car travels 3015 miles in 23 of an hour. What is the average speed, in miles per hour, of the car?

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).