Answer:
√33
x = -5/2 ± ---------
2
Step-by-step explanation:
Through completing the square, we get:
x^2 + 5x + (5/2)^2 - (5/2)^2 - 2 = 0, or
(x + 5/2)^2 - 25/4 - 2 = 0.
This simplifies to
(x + 5/2)^2 = 33/4
Taking the square root of both sides yields:
x + 5/2 = ±√(33/4), which can be solved explicityl for x:
√33
x = -5/2 ± ---------
2
Answer:
-3
Step-by-step explanation:
Answer: The function does not have an inverse.
Step-by-step explanation:
Unless the domain is restricted, the function doesn't have an inverse because it is not one-to-one.
Answer:
Step-by-step explanation:
This is the case of an exponential growth. The function for exponential growth is,
where,
- y(t) = value after time t = f(x)
- y₀ = initial value = $120,000
- r = rate of growth = 5.5% = 0.055
- t = number of periods = x years
Putting the values,