Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long is each side?

Which equation represents this?

2x = 49

2x + 4 = 49

3x = 49

3x + 4 = 49

The perimeter of a figure is the sum of the measures of all its sides. Let x be the measure of the two equal side. Then, the third side becomes x+4. The equation that represents this is,

x + x + (x + 4) = 49

Simplifying this would give an answer of,

3x + 4 = 49

This is the fourth choice of letter D.