PLEASE HELP!! A recipe that makes 4 servings calls for Two-thirds cup of flour. How much flour is required to make 20 servings?

a) 6 cups

b) 3 and one-third cups

c) two-thirds cups

d) two-fifteenths cups

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

If you could answer these your a life saver