Write the fraction 28/21 in its simplest

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

My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table