Question

A buffet costs $15 plus $2 for each drink. Which function gives the total cost?

A. c(d)=2+15d
B.c(d)=17+d
C.c(d)=17d
D.c(d)=15+2d

Answer 1

Its D

Explanation:

because that is what I got on my test!

Answer 2

D.
`c(d)=15+2d`

Explanation:

The buffet by itself is $15, so that will be a number by itself, since it isn't changed by any variables. (you can rule out a, b, and c by this point).

Since it's $2 for each drink, this would require a variable since the price would fluctuate depending on the number of drinks.

Therefore, your function should look like this:

`c(d)=15+2d`