-25x is the slope
-42 is the y-intercept
Answer:
the area product is simply (3x+5).(x+7 which can multiply if desired to obtain highlight3x/2+ 26x + 35.
You can use Completion of the Square on the trinomial product to put this trinomial into standard form. You would want this form to be like (x-h)2 +k.
Note that 1111 is not divisible by 3, so it follows that

(they are coprime). Given that

, where

is the Euler totient/phi function, and that

we can then write

By Euler's theorem, we have

and so

Note that

which means

so

.
The sum of 3 times a number and 4