The materials for each bracelet cost 3.25 and she sells the bracelets for 6.75 each. to find her profits, she the equation p=6.75x -3.25x. explain what the variable x represents

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 f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?