Final answer:
To find the constant of proportionality between earnings and time in hours for Caleb's job, we need to divide the total earnings by the total number of hours worked.
Step-by-step explanation:
The constant of proportionality between earnings and time in hours for Caleb's job can be calculated by dividing the total earnings by the total number of hours worked. We can use the given options to find the correct constant of proportionality.
Let's check option a) $18 per hour: If Caleb's earnings are $18 per hour, then his total earnings for 1 hour of work would be $18. This does not match the given information, so option a) is incorrect.
Similarly, let's check options b), c), and d) using the same method. Once you find the option that matches the given information, you will have the correct constant of proportionality between earnings and time in hours for Caleb's job.
To find the constant of proportionality between earnings and time in hours for Caleb's job, we need to look at the rate at which he earns money per hour. Unfortunately, without specific numerical examples of Caleb's earnings and hours worked, we can't calculate the exact constant of proportionality.
However, similar examples indicate that if someone's job pays $10 per hour and they receive a $2 per hour raise, the percentage change in wage is 20%. If we had information about Caleb's initial pay and any potential raise, we could use that data to calculate his constant of proportionality.