Select the best answer.

cos(3pi/2 + x) =

• -cosx
• sinx
• cosx
• -sinx

What is the y-coordinate of the solution of the system of equations? [tex]y = 2x + 14 \\ - 4x - y = 4[/tex]y=

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?