There are 70 balls of five different colors in a box. Suppose that if 60 balls are taken, then at least one ball of each color appears among the taken balls. What is the minimum number of balls that must be taken so that at least four different colors appear among the taken balls?

could

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answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

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b: |12 – x| ≤ 0.25

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let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

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answer: options

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