A marketing manager for a cell phone company claims that the percentage of children aged - who have cell phones differs from . In a survey of children aged - by a national consumers group, of them had cell phones. Can you conclude that the manager's claim is true

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"