Respuesta :
A.) Is true, because if you follow the graph, at each week, $10 has been added.
B.) Also true, look at the graph, Kari starts with 85 and Kristoff starts with 70.
Have a expediently awesome day!
B.) Also true, look at the graph, Kari starts with 85 and Kristoff starts with 70.
Have a expediently awesome day!
Explanation:
When you will observe,the table, as week progresses , the total amount in Kristoff's account increases by $ 20.
Third week - First week =110 - 70
=40
Similarly, Fifth week - Second week=150-110
=40
Also, if you plot these points (1,70),(3,110),(5,150), on two dimensional plane, the slopes between two points are equal.
[tex]m=\frac{110-70}{3-1}=\frac{150-110}{5-3}=\frac{150-70}{5-1}=20[/tex]
Given by point slope formula
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
2 m=40
m=20
Means , Kristoff saves $ 20 each week.
Now, coming to Kari's bank account
[tex]m_{1}=\frac{135-85}{5-0}\\\\m_{1}=\frac{50}{5}=10[/tex]
So, the true statements are
A. Kari saves $10 each week.
B. Kari had more money in her account than Kristoff when they started their weekly savings.
D. Kristoff saves $70 the first week.