Consider the equation 256 = x4. how many real solutions of x exist?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?