I think is
4 x + 2y
256x + 16y
Or a subset of the natural numbers.
Answer: a.) The printing press bc .25×200+35=85 and .15×200+50=80. And 80<85.
b.) 150 programs are needed to make them the same.
.25x+35=.15x+50 is 150.
Subtract .15x from both sides
Subtract 35 from both sides
Divide both sides by.10