Four houses each have four floors. on each floor are four apartments, with four doors in each apartment. on each door are four hinges. how many hinges are there in the four houses?

Two farmers pay a total rent of $140 for a pasture. the first farmer placed $4 oxen in the pasture, and the second farmer placed $30 sheep in the pasture. the farmers split the rent based on the proportion of the pasture eaten by their own animals that month. how much should the first farmer pay, if 1 ox eats as much as 10 sheep in a month?

Carlos by 24 mi and ran 6 miles what is the ratio of the distance carlos ran to the distance he biked

Apply the distributive property to simplify the expression. −4(5x + 2)