Recall that √x has a domain of x ≥ 0.
So, f(x) is defined as long as
(x + 1)/(x - 1) ≥ 0
• We have equality when x = -1
• Otherwise (x + 1)/(x - 1) is positive if both x + 1 and x - 1 are positive, or both are negative:
Then the domain of f(x) is
x > 1 or x ≤ -1
On the other hand, g(x) is defined by two individual square root expressions with respective domains of
• x + 1 ≥ 0 ⇒ x ≥ -1
• x - 1 ≥ 0 ⇒ x ≥ 1
but note that g(1) is undefined, so we omit it from the second domain.
Then g(x) is defined so long as both x ≥ -1 *and* x > 1 are satisfied, which means its domain is
x > 1
f(x) and g(x) have different domains, so they are not the same function.
I’d say F. While weather distracting you is dangerous, if your tires are worn down it’s really dangerous to drive with. They can cause steering problems and can make you skid. Plus it increases the chances of a blowout. Plus the weather distracting you won’t happen every time you drive.
It is possible to replace the CO2 cylinder in an inflatable PFD each time the PFD is inflated.
<h3>What is an inflatable PFD?</h3>
An inflatable PFD is a specific inflator mechanical device based on a CO2 cylinder that fills a given sac with air.
Inflatable PFDs need to have to maintaining different types of safety measures to avoid the failure of the device (especially in emergency situations).
Inflatable PFDs can be classified according to their features into Type I, Type II, Type III, and Type V (for example, Type III allows to buoy to more than 15 pounds), where Type IV PFDs are not inflatable.
In conclusion, it is possible to replace the CO2 cylinder in an inflatable PFD each time the PFD is inflated.
Learn more about Inflatable PFDs here:
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Answer is A
Explanation :
