845 cents Because 4,000 x 0.17= 680. 680-595.50= 84.05. 84.05 is 845 cents.
Let us say, the number is "a"
one less than "a" is ... well a - 1
2/5 of that will be... well, 2/5 * ( a - 1)
one more than "a" is... well a + 1
3/5 of that is.. hmmm 3/5 * (a + 1)
now, we're told that, the first expression is "less than" the second one, thus

solve for "a", or make it "x" if you wish, same thing anyway
Answer:
Slope is the 'steepness' of the line, also commonly known as rise over run (y/x)
Step-by-step explanation:
The second one hopefully. I dk