5x − y = 11
2x − 2y = 9
Based on the system of equations above, what is the value of 3x + y?
SAT Algebra No Calculator
Quiz
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Mathematics
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University
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Hard
Barbara White
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16 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
5x − y = 11
2x − 2y = 9
Based on the system of equations above, what is the value of 3x + y?
−2
0
2
4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Two numbers have a difference of 4 and a sum of −7. What is their product?
−33
−10.25
8.25
10.25
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
It cost Emmy p dollars to make each of her custom bracelets, which sell for m dollars a piece. She makes a profit of $60 if she makes and sells 5 of these bracelets, but she only makes a profit of $10 if she makes 5 bracelets but only sells 4 of them. How much does it cost Emmy to make each bracelet?
$36
$38
$48
$60
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If the lines 4x + 5y = 12 and 6y − kx = 6 are perpendicular, what is the value of k?
3.5
5.5
7.5
9.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements is equivalent to the statement −4 < 2x ≤ 2?
x > −2 and x ≤ 1
x < −2 and x ≥ 1
x ≥ −2 and x < 1
x ≤ −2 and x > 1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The annual profit from the sales of an item is equal to the annual revenue minus the annual cost for that item. The revenue from that item is equal to the number of units sold times the price per unit. If n units of a portable heart monitor were sold in 2012 at a price of $65 each and the annual cost to produce in units was $(20,000 + 10n), then which of the following statements indicates the total profit for the heart monitor in 2012 was greater than $500,000?
500,000 < 55n − 20,000
500,000 > 55n − 20,000
500,000 < 55n + 20,000n
500,000 < 75n − 20,000n
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Colin can read a maximum of 25 Pages an hour. If he has been reading a 250-page book for H hours, where H < 10, and has P pages left to read, which of the following expresses the relationship between P and H?
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