You can send only 23 texts, when you are only able to spend $28.
-27/14
The formula is y2-y1 over x2-x1. If you plug in you points that would be 18-(-9) over -10-4. Subtract and that’ll be your answer. Hope this helps!
235 x 40 = 9400
235 x 5 = 1175
9400 + 1175 = 10575
235 x 45 = 10575
