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Help is very much appreciated

Help is very much appreciated-example-1
User Andbi
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1 Answer

13 votes
13 votes

Answer:

Options : B & D

Explanation:

E(x) = 10x - 30 , where x is the number of doors she knocks

Given she has to pay her own expense.

So whatever she earns $30 is reduced from it ,for her expense.

Option A: She can earn $10 even if she does not knock

any doors - False

That is, x = 0

When x = 0 , E (x) = 10 ( 0 ) - 30 = - 30

=> she loses $30.

Option B :Her expenses are $ 30 per week - True

E(x) = 10x - 30

Expenses are reduced from her earnings.

Option C: She will lose $10 per week if she does not knock

any doors - False.

Already checked on option A that if she does not knock

on any door, means x = 0 , then loses $30.

Option D : If she does not knock on any doors at all during

the week , she will lose $30 - True

User Drstevok
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2.8k points