A blackboard has an area of 28 ft2 and a perimeter of 22 ft. What are the dimensions of the board? 2 ft by 11 ft
2 ft by 14 ft
4 ft by 7 ft
7 ft by 7 ft

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step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

step-by-step explanation:

the answer is 89 d

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