Tommy makes a picture of his room. in the picture, his room is 4in by 6in. his scale factor is 1in=2ft. the actual length of his room is 7ft. what is the width of his room?

Solve the system of equations. y= 2x y= x^2 - 15

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Evaluate the expression. (9 + 5)(3 + 2)0