DOES ANYONE KNOW THE ANSWER TO THIS?? PLEASE HELP! 50 POINTS!!

Photographs of pupils are taken and offered for sale in various packages.
2 large and 3 small: $8
3 large and 2 small: $9
4 large and 2 small: $11
These prices include the same amount for postage and packing.
What is the cost of postage and packing included in these prices?
A $1
B $2
C $3
D $4

Heidi is a student of psychology at the university of arizona. she is currently involved in a research project to test the effects of sexual dominance on motherhood. heidi is most likely applying which psychological approach? humanism feminism behaviorism structuralism

What percentage of roads in germany have no speed limit?

50 ! kate is 14 years old and just started taking dance classes with her friends at a local dance studio. this is her first time in a dance program, so everything is new to her. her friends convinced her to join the class since they have been enjoying it for a few months. how could the following terms her succeed in the dance class? ● secondary reinforcement ● identity vs. role confusion ● observational learning how could the following terms hinder her success in the class? ● circadian rhythm ● basal ganglia ● vestibular sense