word problem?

Question

to send a fax, there is a base cost of $1.90 plus .12 (cents) per word. What is the equation that gives the cost, T, of a fax as a function of the number of words, w, in the message sent?
How much to send a fax with 37 words?

Answer 1

T = 1.90 + .12(w)
T = 1.90 + .12(37)
T = 6.34

Answer 2

It can be tough figuring out how to translate these word problems into equations. Look first at what you are told:

Base cost= $1.90--this doesn't change (this is your constant)
Word cost= $0.12--this does change, dependent on the number of words. This is a clue that your variable will be here. It will be $0.12w because you are multiplying the number of words by the cost per word
Total cost = $1.90 + $0.12w OR
T=$0.12w + $1.90

Then use that equation to solve for 37 words.

Answer 3

T = 1.9 + .12(w)

if there are 37 words

Cost of fax = 1.9 + .12(37)
Cost of Fax = 1.9 + 4.44
Cost of Fax = $6.34