I still need that 10 points tho
Answer:
28/3
Step-by-step explanation:
We see that the triangles are simalar to eachother, so we can set up this ratio:
x/(8+x) = 7/13
x = 56/13 + 7x/13
13x = 56 + 7x
6x = 56
x=56/6=28/3
2(4a^2 +a +3)
Factor out the 2
Answer:

Step-by-step explanation:
Given


Required

First, calculate h(xc)
If 
Then

Solving further:

Substitute h(xc) for x

Substitute 

