35. What's my line? You use the same bar of soap to shower each morning. The bar weighs 80 grams when
it is new. Its weight goes down by 6 grams per day on
average. What is the equation of the regression line
for predicting weight from days of use?

The equation is:

y = 103- 23d

Step-by-step explanation:

The initial amount was 103 grams.

After one day of use the remaining amount of soap was 80 grams.

So the amount of time he spent in one day was:

103-80 = 23

Each day margaret spends 23 grams of soap.

if d represents the number of days elapsed then, the amount of soap "y" that Margaret spends after days is:

y = 103- 23d

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without