Target sold 14,550 laptops. In 2020, they sold 12,000 laptops. What is the rate of change in the number of laptops sold?

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

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Need on this one asap im almost done with this subject