Need this quick, SAT help

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?

The equation 24x2+25x−47ax−2=−8x−3−53ax−2 is true for all values of x≠2a, where a is a constant. what is the value of a? a) -16b) -3c) 3d) 16

Which phases do not always fill their containers? select all that apply a. solid b. liquid c. gas