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pogonyaev
3 years ago
8

Hey guys I need help with this exercise!!! PLZZZ HELP!

Mathematics
1 answer:
IRISSAK [1]3 years ago
6 0

Answer:

365

Step-by-step explanation:

The discount is 30 %

That means we pay 70 %

original price * 70% = 255.50

Change to decimal form

original price * .70 = 255.50

divide each side by .70

original price * .70/.70 = 255.50/.70

original price =365

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What is the student's error?
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Answer:

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Step-by-step explanation:

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Buying one movie ticket online costs $16.50. Two tickets cost $30.50. Assuming that the relationship is linear, use the drop dow
HACTEHA [7]

Answer:

C(n)=14n+2.50

Step-by-step explanation:

Let

n -----> number of tickets

C ----> represent the cost of buy n tickets online

we have the ordered pairs

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<em>Find out the slope of the linear equation</em>

The formula to calculate the slope between two points is equal to

m=\frac{C2-C1}{n2-n1}

substitute the values

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<em>Find the equation of the line in slope intercept form</em>

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we have

m=14

point(1,16.50)

substitute

16.50=14(1)+b

b=16.50-14

1b=2.50

substitute

C(n)=14n+2.50

The domain of the function is all positive integers (whole numbers) including zero

{0,1,2,3,4,...}

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Step-by-step explanation:

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