A taxi charges a $3 base fare and an additional $2 for every mile traveled. Write the equation that represents the cost, y, of the ride in terms of the number of miles, x.
y=3x+2
The temperature in a room starts at 70°F and decreases by 2°F every hour. Write an equation that represents the temperature, y, after x hours.
y=-2x+70
A farmer has 300 apple trees and plans to plant 25 new trees each year. Write the equation to model the total number of apple trees, y, after x years. How many apple trees will the farmer have after 4 years?
y=25x+300 and 400 trees
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