An item costs $390 before tax, and the sales tax is $31.20. Find the sales tax rate. Write your answer as a percentage.

390/31.20=12.5 you can either write it as 12.5% or 13% if u round up

Step-by-step explanation:

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7