Solve: 7x = 3x + 24
Final Grade of the 6 Weeks (Worth 2 Grades)

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Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
6
2.
FLASHCARD QUESTION
Front
When Lisa was born, her parents put $8,000 into a college fund account that earned 9% simple interest. What is the interest earned after 18 years?
Back
$12,960
3.
FLASHCARD QUESTION
Front
Peppy Pets charges a flat fee of $15 plus $3 per hour to keep a dog during the day. Happy Hounds charges a flat fee of $21 plus $1 per hour. For how many hours is the total fee charged by the companies the same?
Back
3
4.
FLASHCARD QUESTION
Front
Jenny writes the equation y = 1/2x + 5. Why is she incorrect?
Back
The slope is -2, the equation should be y = -2x + 5
5.
FLASHCARD QUESTION
Front
A rental car agency charges $30.00 per day plus per mile $0.15. Another rental car agency charges $36.00 per day plus $0.10 per mile. How many miles would have to be driven in one day for both rental agencies to cost the same amount to rent?
Back
120
6.
FLASHCARD QUESTION
Front
Define simple interest.
Back
Simple interest is calculated using the formula: I = PRT, where I is the interest, P is the principal amount, R is the rate of interest per year, and T is the time in years.
7.
FLASHCARD QUESTION
Front
What is the formula for finding the slope of a line?
Back
The slope (m) is calculated as m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.
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