Solve For X
A) X = 6.25
B) X =
C See below
Step-by-step explanation:
Use FOIL to find answer
First, Outer, Inner, Last
First 2x times 2x = 4x²
Outer 2x times 5 = - 10x
Inner 5 times 2x = 10x
Last 5 times 5 = - 25
so equation ends up 4x² - 10x + 10x - 25
or 4x² - 25
table 3 represents a direct variation function. : )
47 - 90 = 43
43 - 180 = x
x = 137