Answer:
huh
Step-by-step explanation:
It gets you closer to your answer.
Ex: 11×2-- Round 11 to 10 and then multiply and get 20. But if you get some answer like 50, you know it is wrong. But the answer is 23
Y=140-5x
x will be the minutes so whatever minute you put, you multiply it by 5 the you subtract 140 with whatever you have and there’s your answer
Oof I think it's 0.75^5 I hope it right heh :)