SOLUTION: write an equation and solve. A local natural gas company charges small businesses a $22 monthly connection fee and $1.20/therm. How many therms were used by a company during a

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Question 989994: write an equation and solve.

A local natural gas company charges small businesses a $22 monthly connection fee and $1.20/therm. How many therms were used by a company during a month in which its gas bill was $78.40?

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
t=number of therms used; B=gas bill
.
$22+$1.20t=B
$1.20t=B-$22
t=(B-$22)/$1.20
t=($78.40-$22)/$1.20
t=$56.40/$1.20
t=47
.
ANSWER: The company used 47 therms.