Chapter 2: Problem 1
In the expression \(4 x^{2}-7 y-8,\) what is the coefficient of the \(x^{2}\) -term? What is the coefficient of the \(y\) -term?
Chapter 2: Problem 1
In the expression \(4 x^{2}-7 y-8,\) what is the coefficient of the \(x^{2}\) -term? What is the coefficient of the \(y\) -term?
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Get started for freeLOGICAL REASONING Decide whether the statement is true or false If false, rewrite the right-hand side of the equation so the statement is true. $$ \frac{2}{9}\left(\frac{1}{3}-\frac{4}{9}\right) \stackrel{?}{=} \frac{2}{9}\left(\frac{1}{3}\right)-\frac{2}{9}\left(\frac{4}{9}\right) $$
FREIGHT TRAINS A train with 150 freight cars is used to haul two types of grain. Each freight car can haul 97.3 tons of barley or 114 tons of corn. Let \(n\) represent the number of freight cars containing corn. Which function correctly represents the total weight the train can haul? $$ \text { A. } W=97.3(150-n)+114 n \quad \text { B. } W=97.3 n+114(150-n) $$
LOGICAL REASONING Your friend does not understand how the product of \(a\) and \((b+c)\) is given by both \(a b+a c\) and \(b a+c a\) Use the properties of multiplication to write a convincing argument to show your friend that both statements are correct.
MULTI-STEP PROBLEM A customer of your flower shop wants to send flowers to 23 people. Each person will receive an \(\$ 11.99\) "sunshine basket" or a \(\$ 16.99\) "meadow bouquet." a. Let \(s\) represent the number of people who will receive a sunshine basket. Which function can you use to find \(C\), the total cost of sending flowers to all 23 people, depending on how many of each arrangement is sent? (A) \(C=16.99(23-s)+11.99 s\) (B) \(C=11.99 s+16.99(23)\) b. If 8 people receive a sunshine basket, what is the total cost of the flowers? c. If 13 people receive a meadow bouquet, what is the total cost of the flowers? d. CRITICAL THINKING If your customer can spend only \(\$ 300\), what is the greatest number of people that can receive a meadow bouquet?
DISTRIBUTIVE PROPERTY Use the distributive property to rewrite the expression without parentheses. $$ -4(t-8) $$
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