Which pair of sentences is describing the same velocity?
a. a car is parked. a car is moving in circles.
b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north.
c a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy.
d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.

As oil prices rose during 2006, demand for alternative fuels increased. ethanol, one alternative feul, is made from corn. according to an article in the wall street journal the price of tortillas which are made from corn also rose during 2006. the price spike in tortillas is part of the ripple effect from the ethanol boom. draw demand and supply graph for corn market and use it to show the effect on this market of an increase demand for an ethanol. be sure to indicate the equilibrium price and quantity before and after the increase in demand for ethanol.

Ineed some with my spanish. in advance.

What key in the reading of ancient text modern readers better understand