Answer:
first is the chart so for the time row its 4, 8, 12, 16, 20 & distance is 3, 6, 9, 12, 15
I added the complete graph down below, basically what i did wasplot the points from the chart so (4,3), (8,6), (12,9), (16, 12), and (20,15)
so for example for (4,3) you would first find 4 on the x-axis or the time line and then find 3 on the y-axis and so on let me know if you can see the picture:)
Alright, lets get started.
Given information : Irene writes the check of 200 $ . It means the amount is deducted form here account.
Irene deposited 125 $ in her account. Means this amount is added in her account.
Suppose her initial amount in account was x $.
When she writes the check of 200 $, the amount is deducted so new balance is (x - 200) .
When she deposit amount 125 $, it means , the new balance of her account will be: 
Which shows her account is 75 $ less than her previous balance.
Hope it will help :)
The coral reef would have grown 7 meters.
The equation (3xsquared+ 14x + 20 = 0) has no real roots, so there are no factors made of only real numbers.
The factors are [ -7 plus and minus ( i x square root of 11 ) ]
" i " is the square root of -1 .