Aand b stand for different digits. find the value of both a and b

Could someone with number 1 and 2

Deepak plotted these points on the number line. point a: –0.3 point b: – 3 4 point c: – 11 4 point d: –0.7 which point did he plot incorrectly?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25