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Oxana [17]
3 years ago
9

I need help with this ​

Mathematics
1 answer:
gayaneshka [121]3 years ago
3 0

Answer:

yes it is a function

the domain is (-3, 8]

the range looks like (-5, 2.5]

Step-by-step explanation:

using the vertical line test, you can find that it is a function

the domain is all the x values between -3 and 8. -3 is not included since there is an open circle

The range is all the y values

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7/12
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Answer:

(i) 80-x

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(iii) $36.5

Step-by-step explanation:

Given that:

1. Total Number of fruits = 80

2. Number of mangoes = x

3. Both mangoes and oranges are there in the basket.

Solution (i):

Only mangoes and oranges are there in the basket and the basket is full.

so, Number of mangoes + Number of oranges = Total number of fruits

x + Number of oranges = 80

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Solution (ii):

<u>Given:</u>

Cost of an orange = 50 cents = $0.50

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Cost for x mangoes = \$ 0.40x

Cost for (80-x) oranges = \$ 0.50 \times (80-x)

\Rightarrow S(x) = 0.50 (80-x) + 0.40x\\\Rightarrow S(x) = 40 -0.50x + 0.40x\\\Rightarrow S(x) = 40 - 0.10x

Solution (iii):

Put value of x = 35 in S(x)

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Hence, answers are:

(i) 80-x

(ii) S(x) = 40 - 0.10x

(iii) $36.5

7 0
3 years ago
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