Question

Plzz help!!!

Answer 1

Answer:   Martin saves $65 the first week.

Leighanne saves $50 each week.

Leighanne is saving at a faster rate than Martin.

Step-by-step explanation:

Given: Leighanne and Martin each begin to add a set amount of money each week.

It means the relationship between number of weeks and saving amount is a linear relationship. the rate of change in linear relation is constant.

From the given table, the rate of change of saving amount per week is given by :-

$\frac{145-65}{3-1}=\frac{80}{2}=40$

Thus, Martin add $40 per week to his savings.

From table, in week 1 , the amount = $65

⇒Martin saves $65 the first week.

Now, the initial amount in the beginning= $65-40=\ 25$

From graph the initial amount in the beginning =$15

Clearly 15<25

therefore, Martin had more money in her account than Leighanne when they started their weekly savings.

The rate of change of Leighanne  saving is given by :-

$\frac{265-15}{5-0}=\frac{250}{5}=50$

⇒ Leighanne saves $50 each week.

Since, $40< $50

Thus, Leighanne is saving at a faster rate than Martin.

Answer 2

Martin save $65 the first week