When taking square roots, you can't take square roots of negative roots of negative numbers. So, what will work for the domain of u(x) is what makes u(x) zero or more. We can make an inequality for that.
u(x) ≥ 0.

9x + 27 ≥ 0 by squaring both sides
9x ≥ -27
x ≥ -3
So the domain of the function is when x ≥ -3 is true.
Answer:
i think think a square would have 6 as a surface area
Step-by-step explanation:
soryr if im wrong
Answer:

Step-by-step explanation:
According to the problem, the initial condition is $200. If he owed $100 after 4 weeks, that means he paid $25 per week, so that would be the constant ratio. Therefore, the expression would be:

Where
represents the amount owed, and
represents weeks.
So, in the 4 week, that is,
he owed:

As you can observe, the relation we found first perfectly to the problem. So, the final expression that model this problem is

The absolute change is the difference: 6.88 - 7.25 = -0.37
The rate of change is that divided by the originalprice x 100
Ratre of change: (-0.37/7.25 )*100 = -4.93%
Step-by-step explanation:
1, vertical- axis intercept is the water at the beginning
3, she should have included the y-intercept and x-intercept of the linear function