Answer:

Step-by-step explanation:
A linear function has the following format:

In which a is the slope(rate of change) and b is the y-intercept, that is, the value of y when x = 0.
Rate of change of 3
This means that 
So

A solution at (6, 12).
This means that when x = 6, y = 12. So



The linear function is:

Tyrone height:
Tyrone is 8 inches taller than Monica.
18.81
Half (6.6) base times height (5.7)
The answer is 3 because it goes into 39 and 42 and 6 doesn't go into 39
Answer: pretty sure it will be .5