You can use a plot diagram to plot the points and if they all go straight through the origin then it is proportional :)
Answer:
$1.20
Step-by-step explanation:
A dime is worth 10¢.
10¢ x 12 = 120¢
Since a dollar is 100¢, James would have a dollar and 20¢ left over. So, $1.20.
-5 because a negative plus a negative is a positive this is why it is the right answer
Answer:
5.1 and 5.05
Not really much to explain. Still, hope this helped!
P.S. (5.2 is more than 5.03, btw)