What is the responding variable in this experiment?

Astore sells four 118-pound ears of corn in a package for $3.59. the expression 3.59p represents the cost of the corn for a number of packages. what does the variable p represent?

All of the following are free tools to you prepare for the sat except

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.