The value of a certain textbook seems to decrease accordingly to the formula V=45(2)^-.9t where v is the value in dollars and t is the age of the book in years.

What is the book worth when it is new?

i am sure it will be 90 degrees.

step-by-step explanation:

correct answer:

a + bi

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.

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8