At a gas station, a gallon of gasoline costs $3.50. The relationship between the dollar cost of gasoline and the gallons purchased can be described with a function.
a Identify the input variable and the output variable in this function.
b. Describe the function with a sentence of the form is a function of_."
c Identify an input-output pair of the function and explain its meaning in this situation.

A. $3.50 is input, Gallon of Gasoline is output B. The form is a function of y=3.50x C. $7.00-2 Gallons. This shows that for 7 dollars you can get 2 gallons of gasoline.

Step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b