Felix purchased a keyboard from an online dealer for $72.99, including shipping costs. If the keyboard was listed for $68.44, what was the cost of shipping?

$4.55

Step-by-step explanation:

72.99-68.44=4.55

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

no solution

step-by-step explanation:

there is not enough information in the problem to solve.