Ms. alonzo ordered 4,000 markers for her store. only 1 tenth of them arrived. how many markers did she receive?

a - 4
b - 40
c - 400
d - 4,000

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Ellen makes and sells bookmarks. she graphs the number of bookmarks sold compared to the total money earned. why is the rate of change for the function graphed to the left?

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