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kykrilka [37]
3 years ago
6

Cindy has 26 nickels. She is getting rolls of nickels from the bank. She has enough money to get up to 10 rolls of nickels and e

ach roll contains 40 nickels. The bank will not give partial rolls. The function that models the number of nickels Cindy will have after leaving the bank is f(r)=40r+26, where r is the number of rolls of nickels she gets.
What is the practical domain of the function?



all real numbers

r>1

all integers from 1 to 10, inclusive

{66, 106, 146, 186, 226, 266, 306, 346, 386, 426}
Mathematics
1 answer:
Alchen [17]3 years ago
8 0

We know that the domain is actually the number of rolls that she gets because it is the input variable in the equation  f (r) = 40 r + 26. The number of rolls that she can get can never be a negative number nor a zero nor a decimal number. However she can only get up to 10 rolls. Therefore the answer is:

 

all integers from 1 to 10, inclusive

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