Which represents a unit rate? the cost of cat food is $36 per 3 bags. the cost of orange juice is $3 per jug. the cost of photocopies is $1 per 10 pages. the cost of roses is $50 per 2 dozen.

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

What expression is equivalent to (2x-1)(x-3)?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap