The mean if a set of data is 45 years. find the missing numbers in the data set{ 40,45,}. explain the method you used

Math i have no idea how to do a and b

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?