Bill travels west on Interstate 80 from Summerville. Sally leaves Carlton City and travels on I-80 in the same direction as Bill. Bill's distance in miles from Metro City is given by B(t) = 110 – 60t and Sally's distance in miles from Metro City is given by S(t) = 135 – 70t, where t is the number of hours since noon. Write an expression for the distance separating Bill and Sally and find their separation at 2:00 PM. Select one:

a.
–25 + 10t; –5 miles

b.
245 + 10t; 265 miles

c.
–25 – 130t; –285 miles

d.
–25 + 10t; 35 miles