Answer:
a. 
Step-by-step explanation:
Given function:
To find 
Solution:
In order to find ,we need to plugin input=2 i.e. the value of 
in the function and find the output by evaluating.
Plugging in in the given function.
Evaluating.
∴ (Answer)
2.5(12.75x + 24.50) = 188.75
31.875x + 61.25 = 188.75
31.875x = 188.75 - 61.25
31.875x = 127.50
x = 127.50 / 31.875
x = 4....they worked 4 hrs
A Coefficient is the answer
So to solve for y, subtract 108 from each side.
The equation becomes -y=126
Since you don't want y to be negative then divide each side by -1 this will flip all of the signs (positives become negative and vice versa) without changing the number.
So the equation is now y= -126
