saving = more money
if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.
answer: i'm not going to give you the answer, but some hints to work it out.
step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)