An online service charges $3 for each downloaded movie, plus a monthly fee of $6.50. Which function represents this situation?

y = 3x - 6.50
y = 6.50x - 3
y = 3x + 6.50
y = 6.50x + 3

Respuesta :

ANSWER

y = 3x + 6.50

EXPLANATION

The $3 for each downloaded movie is the unit rate of change.

This is represent the slope of the linear function that models this situation.

The monthly fee of monthly fee of $6.50 the constant rate.

It represents the y-intercept of the function.

The linear function is given by

[tex]y = mx + b[/tex]

The correct choice is y = 3x + 6.50

the answer would be C. y = 3x + 6.50, for every movie you buy (which is x), they would be 3$. therefore it would be 3x, and the monthly fee would just be added with that. :P