Answer: Choice B. k(h(g(f(x))))
For choice B, the functions are k, h, g, f going from left to right.
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Explanation:
We have 4x involved, so we'll need f(x)
This 4x term is inside a cubic, so we'll need g(x) as well.
So far we have
g(x) = x^3
g( f(x) ) = ( f(x) )^3
g( f(x) ) = ( 4x )^3
Then note how we are dividing that result by 2. That's the same as applying the h(x) function
And finally, we subtract 1 from this, but that's the same as using k(x)
This leads to the answer choice B.
To be honest, this notation is a mess considering how many function compositions are going on. It's very easy to get lost. I recommend carefully stepping through the problem and building it up in the way I've done above, or in a similar fashion. The idea is to start from the inside and work your way out. Keep in mind that PEMDAS plays a role.
Answer:
425 = 8.5x + 55
Step-by-step explanation:
His goal is $425, so that's what we want to equal. He saves $8.50 per week, so that's our variable and coefficient - x represents the number of weeks. Finally, he already has $55, so you add it to whatever he earns per week.
Answer:
Step-by-step explanation:
Given radical is
We can rewrite the radical as,
(Since, i = )
Therefore, simplified form of the given radical will be,
Answer:
5.4
Step-by-step explanation:
The number after the decimal is bigger in 5.4 than 5.098 which is the only number that matters in this question however if both numbers were the same you would move to the next number and whichever one has the bigger number.