Question

A telephone company makes up it's monthly bills as follows:a fixed charge of #800 plus a charge proportional to the number of units of call on the telephone.if it charges #2 per unit of call,calculate the total charge on A)80 units

B)150 units

C)782 units How am I going to write it in partial proportion form

Answer 1

Step-by-step explanation:

cost = 800 + 2u , where u the number of units of call

a) so if u = 80

cost = 800 + 2(80) = 800 + 160 = 960

b) if u = 150

......

c) if u = 782

...