General Mathematics – Practice Exercise
1.
The post office offers flat-rate mailing of packages: P15.50 for a package weighing less
than 4 oz, P22.50 for a package weighing 4 oz to less than 8 oz and P30.50 for a package
Weighing 8 oz to 12 oz. Write a piece-wise function for this situation.
Solution:
{15.50 x<4
f(x)= {22.50 4≤x<8
{30.50 8≤x≤12
2.
The base Jeepney fare is PHP 8.00 for the first four kilometers and additional PHP
1.50 per kilometers for the succeeding kilometers. Express the fare for x kilometers as a
function of x.
Solution:
Given:
8 - pesos minimum fare for first 4 km
1.5 - pesos each succeeding km x
- distance kilometers
f(x)= {8 x≤4
{8+1.50 (x-4)
x>4