Question

4. A computer shop charges P20.00 per hour (or a
fraction of an hour) for the first two hours and an
additional P10.00 for each succeeding hour. Find
how much you would pay if you used one of their
computers for 4 hours​

Answer 1

Answer:

P 110.00

Step-by-step explanation:

20 +  20  + (20+10) + (20+10+10)

1st +  2nd +    3rd     +        4th

= P 110.00

Answer 2

Answer:

If the usage is 40 minutes, it is a fraction of an hour.

The total cost is Php20.

Explanation:

Piecewise function:

f(x)=20 where0<x<hours

This means that a computer shop charges Php20 for every hour or a fraction of an hour where even if the usage is only 10 minutes, 15 minutes or 50 minutes, the charge is flat rate of Php20. This unit cost is only up to 2 hours.

If the usage is more than two hours, there will be an additional of Php20 per hour or succeeding hour:

f(x) = 20 + 10(x-2) where x>2 hours

Example:

If the usage is 3hours, the total charges:

f(x)= 20 + 10 (3-2)

f(3) = 20 + 10(1)

f(3hours)= Php30.

The usage is 40 minutes, it is a fraction of an hour. The total cost is Php20.