An electric heater uses 7 1/2 units of electricity in 3 hours. How many units does it use in 5 hours?

12.5 units or 12 1/2 units

Step-by-step explanation:

From the question, it uses 7.5 units in 3 hours.

In one hour it will use; 7.5/3 = 2.5 units

If 2.5 units is used in 1 hour

In 5 hours; 5 × 2.5 units will be used. This gives us 12.5 units or 12 1/2 units.

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.