Answer:
$952
Step-by-step explanation:
First, we need to calculate how much is 8% of 31,000, so:
![31000*8\text{ \% = 31000 x}(8)/(100)=2480](https://img.qammunity.org/2023/formulas/mathematics/college/wadlbdl72e3nwru3rmk0i09nl0a6rx2vjh.png)
It means that his clothing expenses were $2480
Then, 8% of 42,900 is equal to:
![42900*8\text{ \% = 42900}*(8)/(100)=3432](https://img.qammunity.org/2023/formulas/mathematics/college/pu7un5cy92r6limwjkdptb8kpheruxgxln.png)
So, if the annual income increased from $31,000 to $42,900, the clothing expenses increased from $2480 to $3432
Therefore, the difference between these values is:
$3432 - $2480 = $952
So, the answer is equal to $952