There are 1,600 students at a university. 24% of students are sophomores, 20% are juniors, and 28% are seniors. How many student
1 answer:
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Making the assumption that your problem looks like this,
we use the distributive property to multiply:
we use the distributive property to multiply:
The answer to this question is B, (-infinity, -28].
We can get this answer by first multiplying each side of the inequality by 7. That would get rid of the fraction. When one does that, the result is d + 28
0. That means that d -28. In interval notation, which is the notation the problem is asking us, that would be (-infinity, -28], since d is all values less than -28 this includes infinity, but it also includes -28, so there is a ] around it. That means that the answer to this question is B, (-infinity, -28].
We can get this answer by first multiplying each side of the inequality by 7. That would get rid of the fraction. When one does that, the result is d + 28