What are the solutions of x^2+10x+16=0?

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?

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?

To convert celsius temperatures to fahrenheit, you can use the expression (c + 32). tom says that another way to write this expression is c + 32. what error did tom make?