What is the solution of the system? Use substitution.
y= 4x + 4
y = 5x

x = 4, y = 20

Step-by-step explanation:

Substitute y = 5x into y = 4x + 4.

This would be:

subtract 4x from both sides

Then, substitute x = 4 into the equation y = 5x

answer: ok

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225