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Chapter 1: Problem 9
Find each product and write the result in standard form. $$ -3 i(7 i-5) $$
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Each group member should research one situation that provides two different pricing options. These can involve areas such as public transportation options (with or without discount passes), cellphone plans, long-distance telephone plans, or anything of interest. Be sure to bring in all the details for each option. At a second group meeting, select the two pricing situations that are most interesting and relevant. Using each situation, write a word problem about selecting the better of the two options. The word problem should be one that can be solved using a linear inequality. The group should turn in the two problems and their solutions.
In Exercises 95鈥�102, use interval notation to represent all values of x satisfying the given conditions. $$ y=|3 x-4|+2 \text { and } y<8 $$
Explaining the Concepts. What is a compound inequality and how is it solved?
How is the quadratic formula derived?
When 3 times a number is subtracted from 4, the absolute value of the difference is at least 5. Use interval notation to express the set of all numbers that satisfy this condition.
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