12 blue cars 10 black cars 18 white cars. 6 red cars

What is the ratio of red cars to non- red car?
A. 6:46
B. 3:20
C. 3:23
D. 20:3

(Similar figures)

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.