I think you left out the word half. I am going to assume you meant half. If half the garden is planted with flowers, then you take away half of the area, which would be 36. that leaves you with 36sq.ft. that he has used to plant vegetables
Answer: 8x-3 To find (fog)(x) you need to find f(g(x)). That means you need to plug in g(x) in the equation of f(x). So the equation will be 2(4x)-3 which simplifies to 8x-3 My work is shown in the photo below.