Suppose f(x)=x^2-4.Find the graph of f(3x)

3(x²-4) or 3x²-12

Step-by-step explanation:

x²-4 times 3 is equal to 3x-12 which is also 3(x²-12)

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value