Answer:
y =1/3x+20
Step-by-step explanation:
He starts 20 minutes late so we need to add 20 minutes to the time
He travels 3 times faster so he takes 1/3 of the normal time x
y =1/3x+20
You have to do it to the powers of like you did with number one
Domain:
f(x) has a denominator, which can't be zero. So, its domain is given by
g(x) has a denominator as well. Moreover, it has a root. So, the content of the root can't be negative:
And the denominator can't be zero:
So, the domain is
Composition:
We have
The domain of this function is
But we also have to remember about the domain of g(x): if g(x) is undefined, we can't compute f(g(x))!
So, the domain of f(g(x)) is
Answer:
4/5
Step-by-step explanation:
Answer: She left 10% of the cookies at home
Step-by-step explanation: 80 cookies= 100%, 8 cookies = x%. 8 x 100%/ 80 = 10%