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GREYUIT [131]
3 years ago
9

Marie is logging the number of radioactive isotopes she observes every minute. She has determined her function to be f(x) = -4x

+ 120. Based on the situation, describe any necessary restrictions to the domain and range and provide justification or the restrictions
Mathematics
1 answer:
m_a_m_a [10]3 years ago
5 0
If f(x) represents the # of radioactive isotopes present, then f(x) must always be 120 or less, down to zero.  f(x) is zero when x = 30.  Thus, the range  is [0,120], and the domain is [0,30].  The domain represents time measurements; we assume we begin at x=0, and then determine at what value of x the function f(x) will reach zero.
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Janet has 120 dollars,. if she saves 20 dollars per week, in how many days will she have 500?
GrogVix [38]
After 28 days she will have 200. every 28 days she saves 80 dollars and after 112 she will have saved 320. She will then be at 460 and need 40 more dollars which is 14 days, and 112 plus 14 is 126 days. Hope that helped
4 0
3 years ago
Which equation is modeled by the graph? Using the equation, about how many more cars are in the deck at 9:00 a.m. than at 8:30 a
omeli [17]
The correct answer is Choice A.

You can see from the graph that the y-intercept is 50 because it cross on the left at 50.

To find the slope, we can use the following two points (0, 50) and (20, 110). This will give a slope of 3.

Put the 50 and 3 together and you will have the equation:
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6 0
4 years ago
Read 2 more answers
Olympia ate lunch at a restaurant the amount of her check was $6.89 she left eight dollars on the table which included the amoun
maxonik [38]

The equation will be like this,

6.89 + t = 8.00

t = 8 - 6.89

t = 1.11

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6.89 + t = 8.00

To sum up the total amount of cash and coins you have, first, sort each invoice and coin by denomination. Create a separate stack for each denomination and count how many denominations or coins you have.

For each denomination of banknotes and coins, multiply the number you have by the denomination. For example, if you have 4 out of $ 10, multiply by 4x10 to get $ 40. If you have three $ 5 bills, multiply by 3x5 to get $ 15.

Sum the totals to calculate the total amount.

Learn more about Ammount Calculation  here: brainly.com/question/2005046

#SPJ4

3 0
2 years ago
Please help! This is timed
gulaghasi [49]
I think the answer is C 1 2/3
4 0
3 years ago
Read 2 more answers
What is the range of the relation of centimeters as a function of inches? {5.08, 10.16, 17.78, 25.4, 33.02} all positive integer
mel-nik [20]

Answer:

y>0 Option D

Step-by-step explanation:

4 0
3 years ago
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