Answer:
Step-by-step explanation:
R = 9x + 8y
4 = 9x + 8*8
4 = 9x + 64
Subtract 64 from both sides
4 - 64 = 9x + 64 - 64
-60 = 9x
Divide both sides by 9
-60/9 = 9x/9
-20/3 = x
x = -6 2/3
[tex]-\frac{20}{3}[/tex]
R=9x+8y
y=8 and R=4
4= 9x + 8.8
4 - 64 = 9x
-60 / 9 = x
Hope this helps ^-^
