Which pair of figures has the same number of faces as vertices?
1.triangular prism and triangular pyramid
2. triangular prism and rectangular prism
3. rectangular pyramid and triangular pyramid
4. rectangular pyramid and rectangular prism

Option 3 is correct.

( rectangular pyramid and triangular pyramid )

Step-by-step explanation:

The number of faces and vertices in each of the given figures are as follows:

Hence the correct statement among the given options is:

i.e. the figures which have equal number of faces as vertices are:

Rectangular pyramid and Triangular Pyramid.

Hence option 3 is correct.

if x = 1, then the answer is 3.5

d. you cannot tell because there are no values shown.