Answer:
a. 2x + 30
Explanation:
The perimeter of a rectangle is represented by
2l + 2w
So substitute the rectangle values into the equation.
2(2/3(x) + 10) + 2(1/3(x) + 5)
Rewrite fractions for clarity.
2(2x/3 + 10) + 2(x/3 + 5)
Distribute the two into the first expression.
4x/3 + 20 + 2(x/3 + 5)
Distribute the two into the second expression.
4x/3 + 20 + 2x/3 + 10
Combine like terms.
6x/3 + 30
Simplify 6x/3.
2x + 30.