Ihave 2 questions me and real answers or i will report. the cost to rent a hall for alysa's sweet sixteen birthday party is $300. her mom said she must keep the party cost to no more than $5.00 a person. she watched her mom write an expression on her notes that is listed below. what does the variable represent in this expression? 300+200 x a. the number of people attending b. the amount to rent the hall c. the amount of food d. the total cost of the party what is the sum of the coefficients in the expression 2m^2n + 2mn^2 - m + 3n + 9me