10.A 11.D
Step-by-step explanation:
10.
Let number of juniors be x
Let number of seniors be y
Given that juniors must be at least 2, this can be written as x≥2
Given that the seniors must be at least 2, this can be written as y≥2
The total number should be between 7 and 10, this means
x+y ≥7 and
x+y ≤10
11.
Given that for section A, the cost is $75
For section B, the cost is $50
For section C, the cost is $40
Given that section B has three times more seats than section A. This means that 3A=B
Total number of seats is 20,000, this means: A+B+C=20,000
Total revenue collected is $897500, to mean that;
$75A+$50B+$40C=$897500
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Inequalities :https://brainly.com/question/11234618
Keywords :inequalities, situations, charges,revenue, sections
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