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Chapter 6: Problem 46
Simplify each algebraic expression. \(4(x+6)\)
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Solve the equations using the quadratic formula. \(6 x^{2}+6 x+1=0\)
Solve the quadratic equations in Exercises \(37-52\) by factoring. \(x^{2}+8 x+15=0\)
The formula$$N=\frac{t^{2}-t}{2}$$describes the number of football games, \(N\), that must be played in a league with \(t\) teams if each team is to play every other team once. Use this information to solve Exercises 83-84. If a league has 36 games scheduled, how many teams belong to the league, assuming that each team plays every other team once?
A car can be rented from Basic Rental for \(\$ 260\) per week with no extra charge for mileage. Continental charges \(\$ 80\) per week plus 25 cents for each mile driven to rent the same car. How many miles must be driven in a week to make the rental cost for Basic Rental a better deal than Continental's?
Use FOIL to find the products. \((x+7)(x+2)\)
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