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lapo4ka [179]
3 years ago
10

The attendance at the school concert was 578. Admission was $2.00 for adults and $1.50 for students. The receipts were $985.00.

How man adults and how man students attended the concert?
Mathematics
1 answer:
agasfer [191]3 years ago
5 0
2x + 1.5 y = 985
y = students
x = adults
x + y = 578
*-2      * -2
-2x - 2y = -1156

2x + 1.5y = 958
-2x - 2y = -1156 (add these together)

-0.5 y = -198
*-2      *-2
y = 396
x + 396 = 578
x = 182
396 students
182 adults
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<u>Algebra I</u>

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Step-by-step explanation:

According to the graph, our line's y-values span from 2 to 14. Since both 2 and 14 are open dot, they are exclusive from the range:

Interval Notation: (2, 14)

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This is better than the slope forms because it works in the no slope case, as does the standard form.

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Answer: 9x + 5y = -45

Check:

We check each point is on the line

(-5,0)

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(0, -9)

9(0) + 5(-9) = -45, good again


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