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avatar+122 

Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows the minimum number of hours, n, that Annie should work as a babysitter to earn enough to buy the coat?

 

 

 

A. 12 + 6n ≤ 30, so n ≤ 3

 

B.12 + 6n ≥ 30, so n ≥ 3 

 

C.6n ≥ 30 + 12, so n ≥ 7 

 

D.6n ≤ 30 + 12, so n ≤ 7

 Feb 10, 2022
 #1
avatar+251 
+1

Annie's total earnings from her initial savings, $12, and from babysitting should be equal or more than 30. Annie's total earnings from babysitting may be expressed as $6n. The inequality should be,
 
                                           12 + 6n ≥ 30

Solving for x,
                                             6n ≥ 30 - 12

                                        6n ≥ 18    ;     n ≥ 3
 

Hope that helps!

 Feb 10, 2022
 #2
avatar+122 
+1

Thank you very much

 Feb 10, 2022

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