Firstly we check variables to make sure we understand.
y = dollars
x = pounds
On the scale, it says 1.126 lb. Which means 1.126 pounds.
And so, x = 1.126
y = 2x + 3
y = 2(1.126) + 3
y = 2.252 + 3
y = 2.252
The graph for part a and park b. It is underneath. I wrote 1.1, because it is rounded down from 1.126 lb, which is part b. The one with one line and no dots is part a.
You got add all the numbers up and divide it by how many numbers there are to get the average. 9.4 +9.7 + 9.9 + 9.8 = 38.8 divided by 4 =9.7 is Joey's average. 9.5 +9.2 +9.7 +9.6 =38 divided by 4 = 9.5 is Carlos' average. Joey has more average by 0.2.