Question

Xavier has a lunch food budget of $120 per month. He spends an average of $6 per day on lunch?

Answer 1

Answer:

m = 120 – 6 × d

Step-by-step explanation:

Given: Budget is $120 per 1 month, spends $6 per 1 day

On the the table you have 2 columns: label one as "days" and the other one as "$ spent" and fill it:  

Days: 1, 2, 3, 4, ... and so on till 30 or 31

$ spent: 6, 6 × 2=12, 6 × 3= 18, 6 × 4= 32, ... and so on till 30 or 31

On the graph, label the horizontal axis as "days" and the vertical axis as "$ spent."

Now plot the points (1,6), (2,12),(3,18), ... and so on till 30 or 31, and draw a line through them.

The equation is:

m = 120 – 6 × d

So after 20 days, for example, out of 120 will have m=120 – 6 × 20 = 120 – 120 = 0

$0 will be left after 20 days.