Area A rectangle has a perimeter of 20 ft. Find a function that models its area A in terms of the length x of one of its
sides. Also find the dimensions of the rectangle which gives largest area.

Can someone please answer in step by step to help me understand

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

the answer for this question is 38

60%

step-by-step explanation: