Step-by-step explanation:
x^2 + 4x + 8 = (x^2 + 4x + 4) + 4 = (x + 2)^2 + 4.
When x^2 + 4x + 8 > 5, this means (x + 2)^2 + 4 > 5.
So (x + 2)^2 > 1.
=> (x + 2) > 1 or (x + 2) < -1.
=> x > -1 or x < -3.
Flat doesn't change
2 changes with x
y=2x+5
yint is 5
to graph
start at center and go 5 up, that is y intercept
go 1 right and 2 up, that is another point
y=2(2)+5
y=4+5
y=9
cost $9 to rent for 2 hours
Rounding it off to the nearest tenth means rounding it off to the first decimal place . so the answer is 6.8
What is the question itself?
