x = number
the equation to use is: 3x+4=28
3x+4=28
3x=24
x-24/3 =8
x=8
Answer:
x = 13
Step-by-step explanation:
First start with the blank equation

Plug in the legs and hypotenuse. Remember c squared is always the hypotenuse.

Then solve
25 + 144 = 
169 =

c = 13
Sorry i can’t quite see the image can you do another one
We need a picture of the graph