The equation C= 45m + 25 models the total cost , C , in dollars , of a cellphone plan for m , months. Complete this table of values to show the total cost for the first 4 months of this cellphone plan

Table:

m : | | | | |

C ($) : | | | | |

show the total cost for the first 4 months of this cellphone plan :

m          1       2        3          4

C ( $ )   70     115      160      205

Solution:

Given that,

The equation is:

C = 45m + 25

Where,

C is the total cost in dollars

m is number of months

show the total cost for the first 4 months of this cellphone plan

First month

m = 1

C = 45(1) + 25

C = 45 + 25

C = 70

Second month

m = 2

C = 45(2) + 25

C = 90 + 25

C = 115

Third month

m = 3

C = 45(3) + 25

C = 160

Fourth month

m = 4

C = 45(4) + 25

C = 205

Thus the table is:

m          1       2        3          4

C ( $ )   70     115      160      205

Thus the table is formed

m∠a is 90°

m∠b is 40°