If 3x + 12 = 18, find the value of 4x + 1.
4x +1=1

4x + 1 = 9

Step-by-step explanation:

3x + 12 -12 = 18 - 12 ---> 3x = 6 ---> x = 2.

Since x = 2,  4x + 1 is the same as (4 * 2) + 1.

(4 * 2) + 1 = 9.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.