Answer:
3(x+4)−x>4
(3x+3·4)−x>4
(3x+12)−x>4
3x+12−x>4
3x−x+12>4
2x+12>4
(2x+12)+(−12)>4+(−12)
2x+12−12>4−12
2x>−8
2x
2>−
8
2
x>−
23
2
x>−(23−1)
x>−(22)
x>−4
x ∈ (−4,∞)
Step-by-step explanation:
Any one of these
<span>2x^2 + 6x - 36 = 0
D=sqr(36+4*36*2)=18
x1=(-6+18)/(2*2) = 3
x2=(-6-18)/(2*2)= -6</span>
7.04 billion = 7.04 x 10^9