Question

You receive a gift card for trading cards from a local store. The function d=20-1.95c represents the remaining dollars d on the gift card after obtaining c packages of cards. Find the zero and describe its meaning in the context of this situation.

Answer 1

See Below

Explanation:

To find the zero of the function, we let d = 0.

We have,

`d=20-1.95c\\0=20-1.95c\\1.95c=20\\c=10.26`

This basically means

c = 10.26 (or 10) when d = 0

This means you can buy 10 packets before running out of money.