In one month american's consumed 320,500,000 gallons of gasoline. express this number in scientific notation.
a) .3205 x 109
b) 3.205 x 108
c) 3.205 x 10-8
d) 32.05 x 107

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.