D should be the correct answer
Answer:
30
Step-by-step explanation:
80% of 30 is 24 (u can use a calculator if you would like to check the answer but it is 30)
Answer: (f)
Step-by-step explanation:
Given
Line that passes through
and 
Using two point form, equation of a line is given by

Insert the values

Thus, option (f) is correct
Answer:
11.C
12.B
Step by step explanation:
1.
(x/2) - 7 = 11
2.
2x + 7 = 27
3.
2x - 5 = 25
Hope this helped!! (: