The equation shows how the amount of paint needed is related to the area to be painted. p=2a+5. The variable a represents the area in square meters, and the variable p represents the amount of paint in liters. How much paint is needed for an area of 8 square meters?
Q. The equation shows how the amount of paint needed is related to the area to be painted. p=2a+5. The variable a represents the area in square meters, and the variable p represents the amount of paint in liters. How much paint is needed for an area of 8 square meters?
Identify value for a: Identify the value for a. a represents the area in square meters, so a=8.
Plug in value: Plug in the value for a into the equation p=2a+5.p=2×8+5
Calculate paint needed: Calculate the amount of paint needed.p=2×8+5p=16+5p=21
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