12/02/2020 someone help me

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?