Question

Giselle wants to buy the newest book in her favorite series. She has some money saved but does not want to

use all her savings on the book. Giselle's grandma offers to pay some of the cost of the book for every weed she
pulls in her grandma's garden. The graph shows the cost to Giselle for the purchase of the book after pulling x
weeds in her grandma's garden. Select True or False to describe each statement.

True or False

The book is $18.

Giselle can earn up to $18, pulling weeds for her grandma

Giselle's grandma pays her $1 for every 5 weeds she pulls.

Giselle does not have to use any of her own money toward the purchase of the book when she pulls 90 weeds

Giselle only needs to pull 18 weeds to not use any of her own money.​

Answer 1

The results of the graphical interpretation are:

True

True

True

True

False.

How these conclusions are made.

The book is $18.(True)

The initial cost of the book is $18. That is when she pulls x = 0, the cost on her is $18.

Giselle can earn up to $18, pulling weeds for her grandma(True). When the cost on her is zero. That is at y = 0, x = 90.

Giselle's grandma pays her $1 for every 5 weeds she pulls.(True)

From the graph

When x = 5, cost on her is $17

When x = 10 cost on her is $16

Therefore, for every 5 weeds pulled she has $1 reduction in cost.

Giselle does not have to use any of her own money toward the purchase of the book when she pulls 90 weeds(True)

At x = 90 weeds, the graph intersect the horizontal axis.

when x = 90, y = 0.

Giselle only needs to pull 18 weeds to not use any of her own money.(False).

When she pulled 18 weeds the cost on her is approximately $14.