Answer:
<em>Each axis has a label. The axis label shows the name of the variable and its unit. The data points are the values plotted on the graph. Each point is plotted using a pair of values for the variables (the x-coordinate and the y-coordinate).</em>
Step-by-step explanation:
The mean is given as 7. That is the only information given, and it is not enough to determine the number of raisin in each scoop.
Suppose the total number of raisins was given, then the total number of raisins is easily given as (total number of raisins) ÷ (mean)
= (total number of raisins) ÷ 7
I'm assuming that the number after the variable is supposed to be the exponent.

Combine like terms to get:
(3y + 7) + (5y-7)= 8y
(4y - 5)- 8y= -4y-5