4 years ago

Justin is considering two websites for downloading music.The costs are detailed here.

Mathematics

1 answer:

solniwko [45]4 years ago

3 0

Answer:

Website 1: Y=1.5x+30

Website 2: Y=2x

Step-by-step explanation:

Website 1 has upfront cost of $30.

The cost of download will be $1.5 per download

Total cost will be 1.5X+30

Where in for Website 2, it will be multiplied by $2

so Y=2X

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there are four semi trailer trucks parked in a line at the rest stop after the first truck each truck in the line weighs 2 tons

alexira [117]

Call the weght of the first truck " $w_{1}$ ". We then know that the truck after that is 2 tons more, and the next and the next. i.e:
$w_{2} = w_{1} + 2$
$w_{3} = (w_{2} + 2) = (w_{1}+4)$
$w_{4} = (w_{3} + 2) = (w_{1}+6)$

We also know that total is 32 tons.
$w_{total} = 32 = (w_{1}) + (w_{2}) + (w_{3}) + (w_{4})$
$32 = (w_{1})+(w_{1}+2)+(w_{1}+4)+(w_{1}+6)$
$32= 4(w_{1})+12$
$20=4(w_{1})$
$w_{1} = 5 tons$

Therefore the trukcs weigh 5,7,9 and 11 tons for a total of 32 tons.

Converting to pounds, the trucks weigh 10,000, 14,0000, 18,0000 and 22,000 pounds.

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3 years ago

-2(-2x + 3)-x -1 = -28

vekshin1

Answer:

x = -1

Step-by-step explanation:

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Step-by-step explanation:

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These are the values in Greta’s data set. (2, 43), (3, 46), (4,61), (6, 70), (7,74) Greta determined the equation of a linear re

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