C: (1+3/4)(8) = 14 hours
G: (1+1/3)(8) = 10.7 hours
S: (2/3)(8) = 5.3
Answer:
Variable- it doesnt really matter. Im just going to use X.
Equation- $16.35 + x = $39.75.
The solution is $23.40
Step-by-step explanation: Basically you reverse the equation so it says $39.75 - $16.35 = x . Then you just subtract.
I think maybe 3) would make the most sense because she wants a random sample of students and the other options are specific on the type of students.
Answer:

Putting the value of x of coordinate point (12,-2)
where x= 12
y= 5×12/6 -12
= 5(2)-12
=10-12 = -2
option D