
Unit 1 Lesson 2 Quiz
Authored by Adrian Correia
Mathematics
9th Grade

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12 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Solve: 3x - 10 + 4x = -2*(x - 4) + 9.
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Solve: (1/2)*(n - 4) - 7 = -2n + 6.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Classify the equation 4x + 6 = 2*(2x + 3) as “identity,” “no solution,” or “one solution.” Explain briefly.
Identity
No solution
One solution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Classify the equation 6x - 5 = 2*(3x + 4) as “identity,” “no solution,” or “one solution.” Explain briefly.
Identity
No solution
One solution
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Movie theaters share 3 tubs of popcorn. CostA = 14.5n + 17.25, CostB = 13n + 20.25. a) For what n are the costs equal? b) Which theater is cheaper for n = 1? for n = 3?
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Coffee blend: Arabica $28/lb, Robusta $8.75/lb, use 3 lb Robusta to make a $15.50/lb blend. Let a = Arabica pounds. Write the equation and solve for a (to two decimals).
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Music plans: Current cost = 0.95s. New cost = 0.89s + 12. a) Find the break-even number of songs s. b) Should Cameron switch if he expects to buy 250 songs? Why?
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