Spongebob is buying ice cream cones with pikachu. spongebob ordered a vanilla ice cream, and pikachu ordered a strawberry cheese ice cream. spongebob's cone costs $1.05, while pikachu's cone costs $1.20. if spongebob bought a mint chocolate chip ice cream for barney the dinosaur, which costs $2.15, how much do spongebob and pikachu have to spend all together? show your work to support your answer .