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1. |
Use the substitution method to solve m - n = 7 and 3m + 2n = 6. |
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A. |
(4, -3) |
B. |
(-5, 2) |
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C. |
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D. |
(-3, -10) |
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Hint |
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2. |
Use substitution to solve the system of equations given below.
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A. |
(-10, -12) |
B. |
infinitely many solutions |
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C. |
no solution |
D. |
(-12, -10) |
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Hint |
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3. |
Use substitution to solve the system of equations.
5x + 5y = -30
2x - y = 15 |
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A. |
(3, -9) |
B. |
infinitely many solutions |
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C. |
(21, 27) |
D. |
no solution |
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Hint |
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4. |
Students from the local high school are selling tickets to the town's annual carnival. Adult admission is $5.00 and child admission is $2.50. Two hours after the carnival opened its first day, 440 tickets had been sold totaling $1900. How many adults and how many children entered the carnival during the first two hours it was open? |
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A. |
320 adults, 120 children |
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B. |
220 adults, 220 children |
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C. |
293 adults, 147 children |
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D. |
380 adults, 760 children |
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Hint |
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5. |
Use substitution to solve the system of equations given by y =  and 28x – 32y = -8. |
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A. |
(2, 2) |
B. |
no solution |
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C. |
(1, 1) |
D. |
infinitely many solutions |
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Hint |
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