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kiruha [24]
2 years ago
11

The function f(x) = x + 21 is one-to-one.

Mathematics
1 answer:
earnstyle [38]2 years ago
3 0

Answer:

a. D. f⁻¹(x) = x - 21, for all x

b. f(f ⁻¹(x)) = f(x - 21) = x and f ⁻¹(f(x)) = f ⁻¹(x + 21) = x

Step-by-step explanation:

See attached picture.

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Danny has at least $15 more than his big brother. Danny's big brother has $72. How much money does Danny have
eduard

Answer:

Danny has atleast 97 so I would write it d>/= 97 d is greater than or equal to 97

Step-by-step explanation:


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Help me I forgot everything from last year
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Answer:

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Step-by-step explanation:

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3 years ago
In a newspaper, it was reported that yearly robberies in Springfield were up 40% to 196 in 2013 from 2012. How many robberies we
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Answer:

There were 140 robberies in Springfield in 2012.

Step-by-step explanation:

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When we multiply external and internal members we get

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3 years ago
A salesperson receives a 3% commission on sales the salesperson receives 180$ in commission what is the amount of sales
SVEN [57.7K]
This problem can simply be expressed in an equation. Let's say that x is the amount of sales that is being looked for here. So our equation will be 0.03x = 180. So to put it simply, the amount of sales (x) has to be multiplied by 0.03 in order to get 180. So to solve for x, all we have to do now is divide 180 by 0.03. If we do that, we will be able to get a final answer of 6,000. So we can conclude that the total amount of sales received by the salesperson is 6,000. 
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