Answer:
Graph B
Step-by-step explanation:
Linear graphs move in one straight line in one direction. Graph B is not a straight line and it does not move in one direction.
Answer:
yes
Step-by-step explanation:
....
15/2 = $7.5 per hour
7.5 times 5 = $37.50 earned in 5 hours
<span>(serial number, model number)
That's a function mapping each serial number to its model number.
(part number, serial number)
That's not a function; the same part number is in computers with different serial numbers
</span><span> (model number, part number)
</span><span>
That one's a bit confusing. Normally a given model would have more than one part number inside so this isn't a function. But here the description says there's only one part number for each model, so that would be a function.
(model number, serial number)
Not a function, more than one serial number for a given model number.
</span>