Step-by-step explanation:
perimeter of regular octagon is given as
= 8a
where a is side of regular octagon
so
perimeter = 8 x 20 = 160
so option c is answer
To simplify the equation 3(5 + 2x), the distributive factor must be used, so the number outside the bracket (3), must be distributed (or multiplied) with each of the terms inside the brackets (5 and 2x) and then simplify
<span>3(5 + 2x)
</span>3(5) + 3(2x)
15 + 6x
Is that all the information? it could literally be any number with only that.
