The maximum size of a text message is 160 characters. A space counts as one character....

Question

The maximum size of a text message is 160 characters. A space counts as one character.

a) Write an equation in two variables that represents the remaining (unused) characters in a text message as you type.

 

b) Identify the independent and dependent variables.

 

c) How many characters remain in the message shown.

 

The message shown is ,

 

To,

Jackie

 

Please call me. 

Answer 1

Let r = remaining characters available

Let c = # characters used

 

r = 160 - c

 

The dependant variable is r which is a function of

the independent variable c.

Note:  r is a function of c because the number of

remaining characters available depends on the

number of characters already used.