Question

In the function y = 0.25x + 3.5, y represents the cost of a gallon of milk after a certain number of years, x. How much does the cost of milk increase every year?

A) $0.07
B) $0.25
C) $0.60
D) $14

Answer 1

Since its telling you that x is the number of years and the question is "How much does the cost of milk increase EVERY YEAR" then you can conclude that the cost is increasing by 0.25 each year

Answer 2

Option B is correct

$0.25 does the cost of milk increase every year

Explanation:

Slope-intercept form is given by:

`y = mx+b` .....[1]

where, m is the rate and b is the initial value

Given the function:

`y = 0.25x+3.5`

where,

y represents the cost of a gallon of milk.

and

x represents the number of years.

We have to find how much does the cost of milk increase every year.

On comparing given function with [1] we have;

m = 0.25 and b = 3.5

Initially cost of milk = $3.5

and

cost of milk increase every year = $0.25

Therefore, $0.25 does the cost of milk increase every year