Given
a) x + 36 = 347
b) revenue = $11x
Find
a) x
b) revenue
Solution
a) subtract 36 from both sides of the equation
... x + 36 - 36 = 347 - 36
... x + 0 = 311
... x = 311
b) substitute the value for x and do the arithmetic
... revenue = $11·311
... revenue = $3421