Which equation has no solution?

|-x-3|=5
|2x-1|=0
|5-3x|=-8
|-x+9|=0

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

How would you describe the difference between the graphs of f(x) = 2x2 and g(x) = -2x2?