What is the linear equation for the total cost of downloading songs from eTunes?
8th Math Semester 1 Final

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•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
y = 0.95x + 7.95, where y is the total cost and x is the number of songs downloaded.
2.
FLASHCARD QUESTION
Front
What does the equation y = -25x + 120 represent in a real-world context?
Back
It represents a tank with 120 gallons of water that releases water at a rate of 25 gallons per minute.
3.
FLASHCARD QUESTION
Front
How do you solve the equation ax + c = R for x?
Back
x = (R - c) / a.
4.
FLASHCARD QUESTION
Front
What type of solutions can the equation 2x + 4 = 2x + 4 have?
Back
Infinite solutions, because both sides are identical.
5.
FLASHCARD QUESTION
Front
What is the slope-intercept form of a linear equation?
Back
y = mx + b, where m is the slope and b is the y-intercept.
6.
FLASHCARD QUESTION
Front
What does the slope of a line represent in a real-world scenario?
Back
The slope represents the rate of change between two variables.
7.
FLASHCARD QUESTION
Front
What is the y-intercept in the equation y = 3x + 5?
Back
The y-intercept is 5, which is the value of y when x = 0.
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