Objective - To solve equations involving negative coefficients.

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Presentation transcript:

Objective - To solve equations involving negative coefficients.

Solve.

Jerry made a profit of $320 selling snack bars at a bike race. If the total sales were $1000 and the snack bars cost him $2 each, how many did he sell? Profit = Income - Expenses 320= x = -2x = x He sold 340 snack bars.

Solve.

The population in Falls Creek was 34,000 this year. If the population decreases at 1250 people per year, in how many years will the population be 14,000? Let x = # of years 34, x=14, , x = -20, x = 20 In 20 years