1.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 byB(t) = 110 - 50tand Sally's distance in miles from Metro City is given byS(t) = 135 - 60t, wheretis the number of hours since noon. Write an expression for the distance separating Bill and Sally and find their separation at 4:00 PM.

Select one:

a. -25 + 10t; 15 miles

b. 245 + 10t; 285 miles

c. -25 - 110t; -465 miles

d. -25 + 10t; 35 miles

2.The price of a 2-hour plumbing repair job is $110 and the price of a 5-hour job is $230. Which equation for the costCof at-hour repair job and use the equation to find the cost of a repair job lasting 6 hours.

Select one:

a.C= 30t+ 50; $230

b.C= 40t+ 30; $270

c.C= 40t; $240

d.C= 40t+ 50; $280

3.How much would Carol have to invest today at 6.3% compounded annually to have $5000 for a vacation to China in two years?

Select one:

a. $4703.67

b. $4424.90

c. $3042.86

d. $4564.28