C the horizontal line represents x and it goes to -1 you place your coordinates as (x,y)
Correct. They only want to know how many are 5 cm tall. So we only need to count the 'x' 's in the 5 area, which are 6. You are correct
Answer=6
You can solve this by setting up a proportion. The number of men over the number of women.
3/4 = 210/x Cross multiply
3x = 4(210) Multiply
3x = 840 Divide
x = 280
When there are 210 men, there are 280 women.
When a question says assess the reasonableness of the answer is usually means to explain why you chose it and why it makes the most sense.
x=-57/7
........................