David is considering changing his car to one which used liquefied
petroleum gas (LPG). A litre of LPG costs £0.62 and a litre of petrol
costs £1.29. What is the cost of a litre of LPG as a percentage of the
cost of a litre of petrol (give your answer to the nearest whole number)?

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

no oblique asymptote

step-by-step explanation:

to find the oblique asymptote of f(x)

here numerator has degree 1 and denomintor degree 2

degree of numerator < degree of denominator

hence there is no oblique asymptote

when the degree of the denominator > that of the numerator, we saw that the value in the denominator got so much bigger, so quickly,   giving us a horizontal asymptote of the x-axis. or we can write

f(x) = a polynomial of x + a proper fraction.

in this case only we have oblique asymptotes but not when numerator has less degree.