To do 4x> 12, you divide 4x by 4 to isolate variable then divide 12 by 4, because if you do something on one side you have to do on the other so... x= 3 ..hope that helped . Also 75% of 96 Its 72.. its just 75/100 = x/96 then use cross products to find out that
F(4)=.5×4+8
simplified to F(4)=2+8,
simplified even more means F(4)=10.
The format is known as pascal casing
Well you know that this stadium holds 50,000 people, you also know that it has 250 different seating sections. so you take 50,000 and divide that by 250 and your answer is 200. So there are 200 seats in each section. :)
Its 80 because if you find perfect square around the number 80 you'd get
√64 and √81
which would be 8 and 9