Question 1188552
y=32x+200, the slope in this form is the number in front of x or 32, which is the rate of change per year or a positive 32000 tons per year. 
{{{graph(300,300,-5,7,-50,400,32x+200)}}}
-
The product is maximum when the numbers are the same, or 20. The product will be 400.
Similarly numbers that add up to 150 have a maximum product when the numbers are the same, or 75.