Jose wrote the number 36, if the rule is add by 6, what is the fourth number in jose's pattern? how can you check your answer

The graph shown is the graph of which function?

Which of the following parabolas opens up?

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?