How does a height of a triangle compare to the height of a rectangle

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15