4. a dinner bill is to be divided equally among five friends. if the total cost of the bill is x dollars, which expression correctly describes how much each person pays?
a. 5 + x
b. 5 - x
c. 5/x
d. x/5
5. which equation best describes the pattern in the table below?
mintues cost
20 $10.00
40 $20.00
60 $30.00
80 $40.00
a. c = .50m
b. c = .50/m
c. m =.50c
d. m =.50/c