Answer:
A
Step-by-step explanation:

Hope this helps!
4(9+7-9)
the nines cancel
4*7 =28
Answer:
x+2
Step-by-step explanation:

Answer:
The options provided do not have the correct answer. Read below.
Step-by-step explanation:
Given a 10 by 10 grid model means that there are exactly 100 individual squares present. This shows that each square is equal to 1%.
None of the options provided gives us 12% of the model.
The first option results in 50%, the second results in 5%, third option results in 0.5% and the last option results in 2%.
For 12% we can shade 12 squares completely, half of 24 squares etc.
I hope this answer helps.
1) 12p+12q 2) 11p-11q 3)2p-10q