Answer:
a. The quantities that are proportional are x and y, and x and z.
In mathematics, two quantities are said to be proportional if they have a constant ratio between them. In this case, if x and y are proportional, it means that as the value of x changes, the value of y changes in a consistent ratio. Similarly, if x and z are proportional, the same concept applies.
b. It is not possible to determine the exact number of pitches that are not curveballs the pitcher will throw in Session 5 based on the given information.
To determine the number of pitches that are not curveballs in Session 5, we would need additional information such as the total number of pitches thrown in Session 5 or the percentage of pitches that are not curveballs thrown by the pitcher.
Without this information, we cannot provide a specific answer.
Step-by-step explanation:
