Find the vertex and the axis of symmetry of the graph f(x) = 3(x + 1)2.

Step-by-step explanation:

hello :

the vertex is (-1 ;0)

the axis of symmetry  is : x= -1

i got 10.28 but that rounds up to 10.3

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have