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galina1969 [7]
3 years ago
9

A store sells packages of comic books with a poster. A poster and 3 comics cost ​$9.99. A poster and 12 comics cost ​$18.99. Wri

te a linear function rule that models the cost y of a package containing any number x of comic books.
Mathematics
1 answer:
jekas [21]3 years ago
6 0

Answer:

A

Step-by-step explanation:

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Compute delta y/delta x for the interval [2,5], where y = 4x - 9.
Kamila [148]
We have to compute: Δ y / Δ x.
The interval is [ 2, 5 ] and y = 4 x - 9.
y 1 = 4 · 2 - 9 = 8 - 9 = - 1
y 2 = 4 · 5 - 9 = 20 - 9 = 11
Δ y / Δ x = ( y 2 - y 1 ) / ( x 2 - x 1 ) =
= ( 11 - ( - 1 ) ) / ( 5 - 2 ) = ( 11 + 1 ) / 3 = 12 / 3 = 4
Answer:
Δ y / Δ x = 4

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3 years ago
Consider the function represented by the equation 6q = 3s - 9. Write the equation in function notation, where q is the independe
Llana [10]
Q = 3s - 9/6
q = 3(s - 3)/6
q = s - 3/2

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mars1129 [50]

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The inquality is always false i think..

Step-by-step explanation:

8 0
3 years ago
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Simplify.<br> -12 + (-2)(3)
sammy [17]

Answer:

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Step-by-step explanation:

-12 + (-2)(3)

= (-12)+((-2)x(3))

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Carley beat the school record for the 400 meter run by 1.3 seconds. If she ran the race in 55.7 seconds, what was the record.
dybincka [34]

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57 seconds

Step-by-step explanation:

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