Answer:
x = 9±sqrt(7)
Step-by-step explanation:
3(x-9)^2 =21
Divide each side by 3
3/3(x-9)^2 =21/3
(x-9)^2 =7
Take the square root of each side
sqrt((x-9)^2) =±sqrt(7)
x-9 =±sqrt(7)
Add 9 to each side
x = 9±sqrt(7)
Answer:
Slope m = 2
y-intercept b = 100
Equation: y = 2x + 100
Can u show a picture what your talking about
4r - 8 = 5r + 12
4r - 5r = 12 + 8
-r = 20
r = -20 <===
